Frogs in Iowa: Iowa’s Intriguing Frogs

Do you happen to share our fascination with frogs and live in or plan to visit Iowa? Well, you’re in luck!

In this beautiful Midwest state, 17 different species of frogs call Iowa their home. It’s the perfect place to explore, learn and appreciate the abundance of diverse frogs hopping around.

So, grab your binoculars and boots as we embark on a journey to discover the various species of frogs nestled within the ponds, rivers, and wetlands of Iowa.

#	Name	Details	Image
1	American Toad (Anaxyrus americanus)	Size: 2-4.5 inches (5-11.4 cm) Color & Pattern: Varied brown, gray, or green with darker spots or patches Habitat: Forests, fields, suburban areas Vocalizations: High-pitched trilling call by males during breeding
2	Great Plains Toad (Anaxyrus cognatus)	Size: 3-4.5 inches (7.5-11.4 cm) Color & Pattern: Green or brown with dark blotches; a white stripe down the center of the back Habitat: Grasslands, sagebrush, floodplains Vocalizations: Multi-trill call by males during breeding
3	Fowler’s Toad (Anaxyrus fowleri)	Size: 2-3 inches (5-7.6 cm) Color & Pattern: Gray, brown or green with dark spots and a pale stripe down the back Habitat: Woodland areas, sandy coastal plains, grasslands, urban areas Vocalizations: Short, nasal-like call by males during breeding
4	Woodhouse’s Toad (Anaxyrus woodhousii)	Size: 2-5 inches (5-12.7 cm) Color & Pattern: Gray, green, or brown with dark blotches, light-colored midline stripe Habitat: Grasslands, shrublands, forests, agricultural fields Vocalizations: Males produce a long, nasal trill during breeding season
5	Boreal Chorus Frog (Pseudacris maculata)	Size: 0.8-1.6 inches (2-4 cm) Color & Pattern: Gray, brown or green with dark stripes on the back and sides Habitat: Marshes, grasslands, wet meadows Vocalizations: Series of ascending, short trills
6	Gray Tree Frog (Hyla versicolor)	Size: 1.1-2 inches (3-5 cm) Color & Pattern: Gray, brown, or green with irregular markings, white spots under eyes Habitat: Deciduous forests, shrubby areas, swamps, meadows Vocalizations: Males produce musical trills during breeding
7	Cope’s Gray Tree Frog (Hyla chrysoscelis)	Size: 1.0-2.0 inches (2.5-5.1 cm) Color & Pattern: Gray, green or brown with darker spots or patches, white underside Habitat: Forests, swamps, wooded areas Vocalizations: Short, rapid trills by males during breeding season
8	Blanchard’s Cricket Frog (Acris blanchardi)	Size: 0.6-1.5 inches (1.5-3.8 cm) Color & Pattern: Varied green, gray, or brown with darker markings or spots Habitat: Shallow wetlands, lakes, and streams with grassy or muddy edges Vocalizations: Sharp, high-pitched peeping calls by males during breeding
9	Spring Peeper (Pseudacris crucifer)	Size: 0.75-1.5 inches (1.9-3.8 cm) Color & Pattern: Brown or green with an X-shaped mark on the back Habitat: Woodlands, swamps, marshes Vocalizations: High-pitched peeping call by males during breeding
10	Crawfish Frog (Lithobates areolatus)	Size: 2.5-3.5 inches (6-9 cm) Color & Pattern: Predominantly gray with light reticulated pattern, black-bordered dark spots Habitat: Prairie wetlands, burrows of crayfish Vocalizations: Deep, snore-like call by males during breeding season
11	Plains Leopard Frog (Lithobates blairi)	Size: 2-3.5 inches (5-9 cm) Color & Pattern: Green or brown with prominent dark spots and light-colored dorsolateral ridges Habitat: Wetlands, prairies, grasslands, ponds, and streams Vocalizations: Calls consist of a series of low, guttural rumbles and croaks
12	Northern Leopard Frog (Rana pipiens)	Size: 2.0-4.3 inches (5.1-11 cm) Color & Pattern: Green or brown with dark spots circled by a lighter border Habitat: Marshes, swamps, grasslands, wetlands Vocalizations: Snore-like call by males during breeding
13	Southern Leopard Frog (Lithobates sphenocephalus)	Size: 2-3.5 inches (5-9 cm) Color & Pattern: Green or brown with dark, round spots and light borders Habitat: Marshes, swamps, rivers, agricultural areas Vocalizations: Low-pitched chuckle or snore-like call by males during breeding
14	Green Frog (Lithobates clamitans)	Size: 2.3-3.5 inches (5.8-8.9 cm) Color & Pattern: Dark green or olive green with small dark spots Habitat: Ponds, marshes, lakeshores, slow-moving streams Vocalizations: Deep, bass-like calls by males during breeding
15	Pickerel Frog (Lithobates palustris)	Size: 1.5-3 inches (3.8-7.6 cm) Color & Pattern: Greenish-brown with parallel rows of dark square spots Habitat: Woodlands, marshes, grassy wetlands, near streams and ponds Vocalizations: Low-pitched snore-like calls by males during breeding
16	American Bullfrog (Lithobates catesbeianus)	Size: 3.5-6 inches (9-15 cm) Color & Pattern: Green to brown with dark spots and patterns Habitat: Ponds, lakes, marshes, slow-moving streams Vocalizations: Deep, low-pitched calls by males during breeding
17	Plains Spadefoot Toad (Spea bombifrons)	Size: 1-2.5 inches (2.5-6.3 cm) Color & Pattern: Greenish, grayish, or brown with darker spots or blotches Habitat: Grasslands, savannas, prairies Vocalizations: Males create low-pitched, snore-like calls during breeding

Are the Species of Frogs Found in Indiana Also Present in Iowa?

While Iowa shares similarities in terrain and climate with neighboring states, not all frogs species found in indiana’s ecosystem are present in Iowa. Both states host species like the American bullfrog, yet certain frogs are exclusive to Indiana’s diverse wetlands, which support a unique ecological balance different from Iowa’s.

Are Frogs in Nebraska Similar to Those Found in Iowa?

Frogs found in Nebraska and Iowa share several similarities due to their geographic proximity and similar habitats. However, nebraska frog species can slightly differ because of varying environmental conditions. Species such as the Northern Leopard Frog are common in both states, though some environmental adaptations may set them apart.

17 Frog Species You Can Find in Iowa

Get ready to dive deep into the lives of 17 incredible frog species that call Iowa their home, showcasing their unique adaptations and remarkable behaviors.

1. American Toad

The delightful Anaxyrus americanus is commonly known as the American Toad. A medium-sized creature, stretching 2 to 4.5 inches (5-11.4 cm) in length, this charming amphibian sports a varied wardrobe of brown, gray, or green, adorned with darker spots or patches. Adapted to a range of habitats, including forests, fields, and suburban areas, it can be found croaking its way across eastern North America, from Canada to Mexico.

Armed with a voracious appetite, these intriguing l’il toads are the knights of the night, serving as important insect controllers. As nocturnal hunters, their diet consists of insects, spiders, snails, and other small invertebrates. When the time comes to multiply their forces, they breed in freshwater habitats and lay their eggs, spending their days singing a high-pitched, trilling serenade.

Fear not, for these cute-looking critters are packed with an array of impressive adaptations. Equipped with parotoid glands, they ooze a secret toxin when threatened, and can even inflate themselves to defy predators. Currently enjoying a stable environment, the conservation status of the American Toad is of “Least Concern.” Yet, their fascinating nighttime escapades make them an awe-inspiring addition to our ecosystem.

2. Great Plains Toad

The fascinating Anaxyrus cognatus, commonly known as the Great Plains Toad, boasts a captivating appearance with its distinct green or brown hues and dark blotches adorning its 3-4.5-inch body. This charming creature also features a striking white stripe running down the center of its back, making it a truly captivating sight in the wild.

Roaming across the vast grasslands, sagebrush, and floodplains of Central North America, these captivating amphibians have an insatiable appetite for insects, spiders, and small invertebrates. The alluring melodies of their multi-trill calls echo through the air, as males serenade their potential mates during breeding season in temporary pools where they lay their eggs in long strings.

Notable for their thick skin, designed to minimize water loss, the Great Plains Toad adapts to its environment by employing explosive breeding during rains and burrowing in the soil to aestivate during dry periods. With a current conservation status of “Least Concern,” we can continue to marvel at these extraordinary toads and their remarkable abilities.

3. Fowler’s Toad

Anaxyrus fowleri, commonly known as Fowler’s Toad, is a petite, nocturnal amphibian measuring only 2-3 inches in length. Boasting an earthy color palette of gray, brown, or green, this well-camouflaged toad sports dark spots and a pale stripe down its back, seamlessly blending into its woodland, coastal, and grassland habitats throughout Eastern United States and Southeastern Canada.

These adaptive, solitary creatures feast on insects, spiders, worms, and small invertebrates, employing their parotoid glands to secrete toxin as a brilliant defense mechanism. By digging burrows to stay cool and moist, Fowler’s Toad can adapt to various environments, even urban areas. Their survival strategy has paid off, with their conservation status ranked as “Least Concern.”

The males, distinguished by their nasal-like call, perform a short vocalization to court females during breeding season. Once the pair breeds in shallow freshwater, the female carefully lays her eggs in strands, attaching them to surrounding vegetation. With their intriguing behavioral patterns and stealthy appearance, Fowler’s Toad is undoubtedly an endearing and vital member of nature’s diverse network.

4. Woodhouse’s Toad

Anaxyrus woodhousii, commonly known as Woodhouse’s Toad, is a small and adaptable amphibian found throughout western North America – from the fields of southern Canada to the forests of northern Mexico. Measuring 2-5 inches in length, this friendly toad boasts a mottled gray, green, or brown appearance with dark blotches and a distinctive light-colored midline stripe down its back.

This resourceful creature thrives in a range of habitats, from grasslands and shrublands to forests and agricultural fields. They enjoy a hearty diet of insects, spiders, and other small invertebrates. During the breeding season, male Woodhouse’s toads serenade their potential mates with a long, nasal trill, laying their eggs in lengthy strings within temporary or permanent bodies of water.

The Woodhouse’s Toad is well adapted for survival, possessing parotoid glands that secrete a potent toxin called bufotoxin to deter predators. They are also adept burrowers, easily creating underground shelters. Although their conservation status is currently listed as “least concern,” their populations have been impacted by pesticide use. This versatile and resilient toad continues to play an essential role in our diverse North American ecosystems.

5. Boreal Chorus Frog

Hidden in the marshes, grasslands, and wet meadows of northwestern United States and Canada, the small creature with a big voice, the Boreal Chorus Frog, thrives. Although diminutive in size, measuring only 0.8-1.6 inches, their distinct colors and patterns of gray, brown, or green with dark stripes on the back and sides allow them to stand out in their environment. Pseudacris maculata, as they’re known in the scientific community, have an impressive ability to change their color for camouflage and are remarkable climbers.

Surviving primarily on small insects, spiders, and other invertebrates, these talented amphibians lay their eggs attached to vegetation in shallow water, filling the surrounding area with a series of ascending, short trills to establish their presence. Fascinatingly, these frogs have developed concentrated antifreeze proteins that allow them to endure freezing temperatures – a vital adaptation in their often chilly habitat.

Fortunately, the conservation status of this Iowa resident is deemed the least concern due to their versatile adaptations and stable population, ensuring these interesting creatures remain an essential part of their ecosystem.

6. Gray Tree Frog

Hidden within the deciduous forests, swamps, and meadows of eastern North America lies the elusive Hyla versicolor, a remarkably adaptable frog commonly known as the Gray Tree Frog. Gracefully climbing through their habitats with their sticky toe pads, these frogs exhibit an artistic mastery of disguise, changing from gray to brown or green, adorned with irregular markings and mysterious white spots concealing their bright eyes.

Spanning a petite 1.1-2 inches in size, Gray Tree Frogs feast daintily on insects, spiders, and small invertebrates. When it’s time to reproduce, they seek out temporary and permanent freshwater habitats, laying their precious eggs on floating plants. As males serenade their partners with musical trills, their unique adaptations ensure their survival amongst both the branches and the underbrush.

Braving harsh winters and freeze-tolerant, these adaptable creatures prove that beauty and nature’s artistry flourish even in the depths of adversity. Their skill and resilience has thankfully kept them far from the brink of extinction, a delightful testament to the magnificent wonders of the natural world.

7. Cope’s Gray Tree Frog

Perched high among the trees in the eastern United States and southeastern Canada, the enchanting Cope’s Gray Tree Frog thrives (Hyla chrysoscelis). With a petite frame of 1.0-2.0 inches (2.5-5.1cm), this shy creature can blend seamlessly into its surroundings, changing colors from gray, green, or brown with darker accents, while sporting a pristine white underside.

Feasting on insects, spiders, and other small invertebrates, the Cope’s Gray Tree Frog builds its life amid dense forests, swamps, and other wooded areas. As for reproduction, they embrace their love affair with water, breeding in freshwater habitats and laying their eggs on the surfaces of various bodies of water. This delicate creature takes part in a melodious symphony, with males contributing short, rapid trills during the breeding season.

Possessing an array of astounding adaptations, these frogs residing in Iowa can not only change color, but also cling to surfaces with ease and display an exceptional freeze-tolerance. In fact, they are known to survive even when partially frozen. With a conservation status of “least concern,” the enigmatic Cope’s Gray Tree Frog perseveres, occasionally venturing to the ground, but more often gracing the treetops with its whimsical charm.

8. Blanchard’s Cricket Frog

Introducing Acris blanchardi, the diminutive amphibian more commonly known as Blanchard’s Cricket Frog, who dazzles with a varied array of green, gray, or brown tones adorned with darker markings or spots. These energetic frogs are experts in camouflage, measuring only 0.6-1.5 inches (1.5-3.8 cm) in length, and use their powerful hind legs to leap up to 3 feet (1 meter) in a single bound!

Preferring the serene shallow wetlands, lakes, and streams with grassy or muddy edges of southeast Canada and the eastern United States, Blanchard’s Cricket Frogs find the perfect estuaries to feast on their diet of aquatic insects, spiders, and other small invertebrates. These agile performers serenade their mates with sharp, high-pitched peeping calls, after which the female lays her eggs individually or in small clumps in the shallows.

Despite being tiny, it’s hard not to take notice of Blanchard’s Cricket Frogs due to their prodigious egg-laying skills, producing spawn almost continuously through the breeding season under the conservation status of “Least Concern”. The blend of their unique adaptations, spectacular colorations, and energetic leaps leave no doubt that Blanchard’s Cricket Frogs are truly one-of-a-kind.

9. Spring Peeper

Their intriguing brown or green skin is adorned with an X-shaped mark on their back, making them a small, nocturnal, woodland wonder. Inhabitants of woodlands, swamps, and marshes, these captivating creatures can be found all over Eastern North America, from Canada down to the southeastern United States.

Feasting on a diet of insects, spiders, and small invertebrates, these little frogs expertly navigate their environment using their adaptive toe pads for climbing. With harmonious high-pitched peeps, male Spring Peepers beckon their mates dutifully during the breeding season. Upon finding the perfect freshwater haven, these frogs lay their eggs attached to vegetation, continuing the cycle of life.

A true testament to nature’s resilience, Spring Peepers boast incredible freeze tolerance that allows them to survive temperatures up to -8°C (18°F). Although their conservation status remains listed as “Least Concern,” their enchanting presence serves as a reminder of nature’s awe-inspiring, adaptable beauty.

10. Crawfish Frog

Sporting a predominantly gray, light reticulated pattern and black-bordered dark spots, this elusive creature primarily inhabits prairie wetlands across the southeastern United States.

Feasting on insects, spiders, and even crayfish, these frogs find unique shelter and protection within the burrows of their crustacean namesakes. During breeding season, they lay impressive clusters of up to 7,000 eggs in temporary pools, with the males serenading their counterparts with deep, snore-like vocalizations.

Although Crawfish Frogs are listed as being of “Least Concern” regarding conservation status, they are seldom encountered due to their secretive habits. They possess the ability to secrete toxins as a methodical predator deterrent, making them not just clever but adaptable to both aquatic and terrestrial environments.

11. Plains Leopard Frog

A master of agility, its powerful legs provide exceptional swimming and leaping capabilities, as it gracefully navigates wetlands, prairies, and grasslands throughout the Central United States – from Texas to Nebraska, and Mississippi to Arizona.

Thriving in still or slow-moving water, these feisty frogs lay their eggs in clusters, hidden amidst submerged vegetation. With an appetite for insects, spiders, centipedes, and aquatic invertebrates, their guttural rumbles and croaks reveal their lively presence, making them an essential contributor to a thriving ecosystem.

These versatile creatures boast an ability to regenerate lost appendages, making them vital indicator species for ecosystem health. They are resilient, tolerating drier habitats and currently classified under the “Least Concern” for conservation status – a fascinating, dynamic, and significant component of our natural world.

12. Northern Leopard Frog

These captivating creatures are perfectly suited for life in marshes, swamps, grasslands, and wetlands, stretching from Alaska to New Mexico in North America. Their partially webbed hind feet allow them to swim gracefully, while their long, powerful legs support impressive jumping abilities.

With a main diet of insects, spiders, small crustaceans, and other invertebrates, these voracious eaters keep their habitats in Iowa lively. During breeding season, these frogs settle in shallow, well-vegetated freshwater habitats, and females lay eggs in clusters attached to vegetation. To attract a mate, male frogs serenade their companions with a unique, snore-like vocalization.

Remarkably, the Northern Leopard Frog is capable of surviving being frozen, an unparalleled adaptation contributing to their classification as “Least Concern” in conservation statuses. However, it is worth noting that habitat loss may lead to a decline in future populations. Overall, these fascinating frogs continue to enchant us with their beauty, resilient nature, and captivating behaviors.

13. Southern Leopard Frog

This charming creature displays a captivating green or brown complexion adorned with dark, round spots and light borders. At a petite size of 2-3.5 inches (5-9 cm), they make their homes in marshes, swamps, rivers, and even agricultural areas throughout the southeastern United States.

These curious amphibians have a hearty appetite, indulging in insects, spiders, small crustaceans, and other invertebrates. To expand their family, they breed in shallow freshwater habitats, laying their eggs in mesmerizing masses. You may even hear their low-pitched chuckle or snore-like call emanating from the males as they partake in their breeding rituals.

The Southern Leopard Frog is an agile and adaptable species, boasting powerful legs for jumping and the ability to tolerate colder temperatures. Amazingly, they can even breathe through their skin while hibernating underwater. Currently, these splendid creatures have a conservation status of least concern, but let’s not forget their unique features and crucial role within their ecosystems.

14. Green Frog

Behold the vibrant Lithobates clamitans, better known to us earthlings as the Green Frog! Its striking, dark green or olive green hue, accented by tiny spots, easily captivates the eye – a stunning inhabitant of the ponds, marshes, lakeshores, and slow-moving streams across Eastern United States and Canada. This exquisite amphibian masters the art of camouflage with a size ranging from 2.3 to 3.5 inches (5.8-8.9cm).

As a natural-born gourmet, the Green Frog feasts on a delectable menu of aquatic insects, snails, crustaceans, and small fishes. Cunning and creative, it seeks out shallow freshwater habitats for breeding, laying clusters of eggs as a part of its ingenious reproduction cycle. And, oh, how they serenade! The males’ deep bass-like calls enchant during the breeding season, as their bright yellow vocal sacs visually delight.

Frogs that are designed to jump and swim with their powerful hind legs, these phenomenal creatures are highly aquatic by nature. Perhaps the most fascinating facts linger in their ability to magically regenerate lost limbs, forming an extraordinary evolutionary edge. Fear not for their future, as they are classified with a conservation status of “Least Concern.” Our enchanting Green Frog will continue to leap and swim, astonishing us for years to come.

15. Pickerel Frog

Introducing the captivating Lithobates palustris, commonly known as the Pickerel Frog, a charming amphibian adorned with greenish-brown hues and striking parallel rows of dark square spots. Measuring 1.5-3 inches in size, this agile wonder thrives in the woodlands, marshes, and grassy wetlands of eastern North America, from Canada to the Eastern U.S., often found near streams and ponds.

An omnivorous creature, the Pickerel Frog dines on an array of insects, spiders, and small invertebrates. During reproduction, these remarkable frogs can be heard emitting low-pitched, snore-like calls as they breed in freshwater habitats and delicately lay their egg masses on surrounding vegetation. Boasting incredible adaptations, this frog not only produces skin secretions toxic to some predators, but is also a strong jumper.

Though currently of least concern in terms of their conservation status, the Pickerel Frog boasts a fascinating, and somewhat daunting, fact. Their toxins are harmful to other amphibians, which may lead them to devour smaller frog species. Despite this, the Lithobates palustris remains an intriguing and captivating creature of North America’s wetlands.

16. American Bullfrog

Immerse yourself in the world of the American Bullfrog (Lithobates catesbeianus), a striking amphibian with a size ranging from 3.5 to 6 inches (9-15 cm). Adorned in a rich palette of green to brown, they exhibit dark spots and patterns which serve as excellent camouflage within their habitat. These aquatic creatures can leap and swim with grace and strength, due to their powerful legs.

Dwelling in the eastern and central United States, Canada, Mexico, and various regions around the world, they call ponds, lakes, marshes, and slow-moving streams their home. They satiate their hunger with a diverse diet of fish, crustaceans, insects, small mammals, birds, and other amphibians. The American Bullfrog is even known to be cannibalistic, predating on native species in introduced areas.

During breeding season, male Bullfrogs exclaim deep, low-pitched calls to attract mates, resulting in them laying their eggs in flat surfaces on the water for successful reproduction. Despite being a significant predator, their conservation status remains of least concern and they continue to thrive, showcasing their impressive adaptability. Delve deeper into the world of this fascinating amphibian, and uncover more about its unique quirks and captivating existence.

17. Plains Spadefoot Toad

Venture into the Great Basin and Great Plains regions of the United States and Canada, and you may stumble upon the enchanting Plains Spadefoot Toad (Spea bombifrons). This mysterious creature exhibits a captivating color scheme of greenish, grayish, or brown with darker spots or blotches, blending seamlessly into grasslands, savannas, and prairies, its preferred habitat.

Measuring 1-2.5 inches (2.5-6.3 cm) and feasting on insects, spiders, and other small invertebrates, this toad can be quite elusive. Yet, during breeding season, males can be heard creating low-pitched, snore-like calls, luring a mate to temporary pools where they lay their eggs singly or in small clusters. Interestingly, other toads have been known to mimic the call of the Plains Spadefoot Toad.

Equipped with hard, spade-like projections on its hind legs, the Plains Spadefoot Toad can burrow into the earth during dry periods, a process known as estivation. This resourceful creature residing in Iowa also secretes toxins as a defense mechanism. Though its conservation status is currently of “least concern,” heavy rains can draw these fascinating toads to the surface, revealing their presence to the curious observer.

Nearby States:

• Frogs in Kansas
• Frogs in Michigan

Final Words

In summary, Iowa boasts a remarkable array of 17 diverse frog species, displaying a kaleidoscope of colors, patterns, and unique adaptations. Embark on a fascinating journey through their habitats, appreciating their distinctive vocalizations, and uncover the secret lives of these magnificent amphibians that grace the state of Iowa.