While herping SoCal, we came across this cool frog with a large head, large eyes, a slim waist, round pads on the toe tips, limited webbing between the toes, and a wide dark stripe through the middle of each eye that extends from the nostrils to the shoulders.

The name “treefrog” is not entirely accurate. This frog is chiefly a ground-dweller, living among shrubs and grass typically near water, but occasionally it can also be found climbing high in vegetation and on trees.

Male Baja California treefrogs are just under two inches long and generally green or dark gray, with a creamy underside. Females are gray or brown and a bit larger than the males.

This species utilizes a wide variety of habitats, often far from water outside of the breeding season, including forest, woodland, chaparral, grassland, pastures, desert streams and oases, and urban areas.

During the daytime, individuals seek refuge in cavities or small depressions on the surfaces of the boulders lining streams, often fully exposed to direct sunlight. These perches are usually within a few jumps from the nearest pool.

Like most frogs, Baja California treefrog eats a wide variety of invertebrates. Typical of most frogs, prey is located by vision, and then the frog lunges with a large sticky tongue to catch the prey and bring it into the mouth to eat.

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While checking out this sand prairie in Missouri last month, I came across a tiny amphibian that I have not seen in many years.

Narrow-mouthed Toads are small, flattened frogs with pointed snouts and a fold of skin across the back of their heads. These unusual, plump creatures are typically only around 1 to 1-1/2 inches.

These amphibians are found throughout the southeastern United States, but are absent from high elevations. They use many types of habitats, as long as adequate moisture and shelter are present.

Eastern Narrow-mouthed Toads primarily eat ants, although they also eat termites and small beetles. Their call is a bleating, nasal baaaa, which sounds like a lamb.

It was really neat to see one of these cool creatures again in my travels.

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This cool creature is interesting both in its physical appearance as well as its lifestyle. Eastern Spadefoot Toads spend most their life buried underground. Heavy rains, occurring at nearly any time of year, cause them to emerge in large numbers and congregate at breeding pools created by the rain.

As far as appearance, they are known for their bright yellow eyes with elliptical pupils (like cat eyes) and the dark spade, which is used for digging, on each hind foot. As it digs, it wiggles its way underground, rear first. They are plump, with smooth skin and scattered, tiny warts. They range in color from olive to brown to black.

Eastern Spadefoot Toads are found throughout the eastern United States and prefer dry habitats with sandy soils, but can be found in almost any habitat. Their ability to remain buried for long periods allows them to persist even in suburban areas.

Spadefoots are rather small, growing to about 2-1/2 inches. Females can lay up to 2,500 eggs at once. Their tadpoles grow very quickly and can undergo metamorphosis in as few as 28 days.

These amphibians are nocturnal foragers with a diet of invertebrates, insects, arachnids, termites, worms, and larvae of several insect species.

Here in Ohio, the Eastern Spadefoot Toad is one of our most elusive animals. Though it generally digs several inches below the ground, it may drill down as deep as 8 feet.

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While visiting Zion National Park in Utah I was able to see and hear this interesting amphibian.

It is relatively small (at just over two inches), plump and warty, with a toad-like appearance. A distinctive feature is its suction-like adhesive toe pads for climbing.

They can vary in color and pattern considerably, but Canyon Tree Frogs usually match the soil or rock color of their native habitat to serve as camouflage.

As its name implies, it is an amphibian of canyons and arroyos, particularly rocky, intermittent or permanent stream courses.

Despite being called “tree frogs,” they prefer to perch on boulders and rock faces overlooking pools of water. During warm weather they spend the day hiding in rock crevices.

The Canyon Tree Frog’s call is a loud, rattling series of short trills that sound like they’re coming from inside a tin can. The call is surprisingly loud given the small size of this creature.

This was a neat find and the first time the I got to see Canyon Tree Frogs “in person.”

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While visiting Las Vegas I decided to take a 3-1/2 hour drive to search for a very cool amphibian that lives in a remote area of the Mojave Desert.

The Amargosa toad only resides in Oasis Valley, Nevada; specifically, it occurs along a 10-mile stretch of the Amargosa River and upland springs.

This 3-1/2 to 5 inch creature has a warty back with a light, mid-dorsal stripe and black speckling on a background ranging widely in color from buff to olive.

Unlike most frogs and toads, Amargosa Toads do not call and never vocalize unless threatened (they are able to produce alarm calls when predators grab them).

Like most amphibians, they live in damp areas and flooded marshes are one of their favorite habitats. They are nocturnal hunters, feeding on spiders, insects, snails and even scorpions.

In 2006, the Nevada Division of Wildlife estimated that the total population included about 2,000 individuals. It was a memorable experience seeing this creature in the wild and worth the long drive.

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While walking along the edges of the Big Muddy River in southern Illinois, I often come across this spotted amphibian. It tends to be more brown than the Northern and Southern Leopard Frogs I have encountered.

The Leopard Frog’s common name originates from the irregular, dark colored spotting on its back. It has long, powerful legs, and is capable of jumping surprising distances.

Despite the “plains” name, this frog is almost always found in or near permanent bodies of water, such as rivers, creeks and ponds. Its identification feature to differentiate it from other Leopard Frogs, is that the ridge of skin along each side of the back is broken toward the hind end.

The Plains Leopard Frog feeds on a variety of invertebrates. It mainly uses a “sit and wait strategy.” Once a food items has been sighted, it will stalk and attempt to grab it.

Its species name is blairi and it is sometimes referred to as Blair’s Leopard Frog, named after the noted zoologist and University of Texas professor, Dr. W. Frank Blair.

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This is one of the most conspicuous herps that I see on my visits to southern Illinois. At night they are often out and about and seen crossing roads. In the daytime I’ve encountered them in a range of habitats, including deep in the woods and high up in limestone bluffs.

It is also one of the most variable amphibians in the area in regards to appearance. It can be green or brown in color with varying amounts of spots – and sometimes no spots at all.

Although Southern Leopard Frogs are often found close to water, they are more terrestrial than other frogs in their genus and can stray far from water. They are active both by day and night and can be seen in large numbers on rainy nights.

They are powerful, agile jumpers and may flee away from water rather than toward it. When being pursued, they leap in haphazard, zigzag patterns that make they very difficult to successfully pursue and capture.

Southern Leopard Frogs search for food mainly on land. Insects make up the majority of their diet, but they also feed on spiders, pillbugs and worms.

Despite is being quite common, I always enjoy coming across this beautiful amphibian – no two are alike!

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This amphibian is native to Ohio, yet I have yet to find it in my home state. I have encountered it in West Virginia and Kentucky though.

Mountain Chorus Frogs are small (1 to 1-1/4 inches long) and can be distinguished from Ohio’s similar Western Chorus Frog by the presence of two dark, curved stripes on the back which look like reversed parentheses.

They can be heard calling in shallow water near forests or in wooded ponds, typically from February to April. Their call resembles the sound made by rubbing one’s finger over the teeth of a hard plastic comb.

Outside of breeding season that can be found on damp, wooded hillsides often quite some distance from standing water. It’s always fun to come across this elusive little creature that goes about its life largely unnoticed by humans.

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While visiting California, I decided to seek out this creek-dwelling creature. It was a bit of a challenge, since it is a Federal Species of Concern and California Species of Special Concern.

After quite a bit of hiking I came upon a creek. It wasn’t long after arriving that I spotted an amphibian just shy of three inches with bumpy skin in muddy shades of red, green or brown. It was unremarkable at first glance, but flipping it over revealed a distinctive lemon-yellow color under its legs.

The Foothill Yellow-legged Frog can be found in Pacific from the upper reaches of the Willamette River system, Oregon, all the way south to the Upper San Gabriel River in Los Angeles County, California.

Once thriving across their range, these frogs have disappeared from more than half their historical localities due to a variety of threats, including dams, timber harvesting, mining, livestock grazing, roads and urbanization, climate change, pollution, invasive species and disease.

This amphibian uses slow-flowing streams and rivers to lay its eggs during the Spring months after the flow from the Winter storms has settled. After hatching, the tadpoles typically stay around the location of the egg cluster. After metamorphosis, which typically takes 3-4 months, the juvenile frogs make their way upstream from the hatching site.

The Foothill Yellow-legged Frog is one of the most poorly-known frog species, as no detailed study of its life history has ever been undertaken. I felt very lucky to have found a few individuals of this very cool amphibian on my outing.

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While visiting Pahranagat National Wildlife Refuge in the Mojave Desert, I heard explosive jackhammer-like metallic trills that lasted almost a minute. I decided to investigate.

Located in a region of Southern Nevada which receives only about 6-1/2 inches of rain per year, the refuge’s lakes, marshes, meadows and tall Cottonwood Trees are quite a contrast to the surrounding desert; it’s like an oasis.

I eventually pinpointed where the noise was coming from and located my first ever Great Plains Toad. It was easily identified by its large, symmetrical olive blotches with light borders on a background color of gray-brown to green. It was a robust toad with dry, warty skin.

Additional looking turned up a few more. This creature occurs in deserts, grasslands, semi-desert scrublands, open floodplains, and agricultural areas. The Great Plains Toad is beneficial to farmers, as its primary diet is various species of cutworms as well as other insects.

This amphibian is widespread in the Great Plains States and the Southwestern United States. In dry areas it may only emerge from its burrow for a few weeks when conditions are right, and usually at night; but in areas with permanent water and abundant rain, it may be active all day.

The Great Plains Toad is an accomplished burrower and often remains underground in the daytime if conditions aren’t ideal for it to be out and about. It has spades on its hind feet which makes them well equipped for digging.

This amphibian is slow moving, often using a walking or crawling motion along with short hops. Like most toads in the United States, it relies on the secretion of poison from its wart-like glands to deter predators.

It was very cool to come across this unexpected amphibian while on my visit to the Silver State.

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