Biol. 452 - FROG SPECIMEN PHOTOS

FROG SPECIMEN PHOTOS

Biol. 452 - Vertebrate Natural History

K. Petersen's Home Page Biol. 452 Home Page

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ORDER ANURA
Family Ascaphidae - tailed frog

Western Tailed Frog
These frogs have slender bodies with little webbing between the toes.
This male is in breeding condition, with an enlarged tail-like cloaca & keratinization on the chin, chest & arms.

ORDER ANURA
Family Ascaphidae - tailed frog

Western Tailed Frog
Its outermost hind toe (to the right) is thicker/wider than the other toes.
These tadpoles have large suction disk mouths and a streamlined body to cope with life in fast-flowing water.

ORDER ANURA
Family Pelobatidae - spadefoot toad

Great Basin Spadefoot
They have wide, flat bodies & short legs. They have bumpy skin covered with concentrations of poison glands, but no parotid gland.
Note the 1 black, sharp-edged spade on inner surface of hind feet.

ORDER ANURA
Family Bufonidae - true toad

Western Toad
Note the large parotid glands & warty skin. They also have wide bodies & relatively short legs.
They have two metatarsal tubercles (large keratinized knobs) on hind feet.

ORDER ANURA
Family Hylidae - treefrog

Pacific Chorus Frog
They have slender bodies & legs with long toes.
This species has round toe pads wider than the toes & intercalated discs at the last toe joint.

ORDER ANURA
Family Ranidae - true frog

Northern Red-legged Frog
They have dorsolateral folds. In life, they have bright red coloring on abdomen & legs.
The extensive webbing on their hind feet is stepped down along the inner edges of toes more than the Spotted frog's webbing.

ORDER ANURA
Family Ranidae - true frog

Columbia Spotted Frog
They have dorsolateral folds & unevely edged black spots on the back often have light centers. Their hind legs are relatively short compared to other Ranidae.
They have more extensive webbing of the hind toes, i.e. less stepped down, than the other ranids seen in lab.

ORDER ANURA
Family Ranidae - true frog

Northern Leopard Frog
Their dorsolateral folds extend full length of trunk. The body is bright green or tan with larger & smoother edged brown or black oval spots than spotted frogs. The spots also have light borders.
The webbing on their hind feet does not extend to the tips of the toes - compare to webbing in spotted & red-legged.

ORDER ANURA
Family Ranidae - true frog

Bullfrog
They lack the dorsolateral fold that is characteristic of most of the family.
They have very large eardrums that are partly surrounded by a fold or ridge.

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ORDER ANURA Family Ascaphidae - tailed frog Western Tailed Frog	These frogs have slender bodies with little webbing between the toes.	This male is in breeding condition, with an enlarged tail-like cloaca & keratinization on the chin, chest & arms.
ORDER ANURA Family Ascaphidae - tailed frog Western Tailed Frog	Its outermost hind toe (to the right) is thicker/wider than the other toes.	These tadpoles have large suction disk mouths and a streamlined body to cope with life in fast-flowing water.

ORDER ANURA Family Pelobatidae - spadefoot toad Great Basin Spadefoot	They have wide, flat bodies & short legs. They have bumpy skin covered with concentrations of poison glands, but no parotid gland.	Note the 1 black, sharp-edged spade on inner surface of hind feet.
ORDER ANURA Family Bufonidae - true toad Western Toad	Note the large parotid glands & warty skin. They also have wide bodies & relatively short legs.	They have two metatarsal tubercles (large keratinized knobs) on hind feet.
ORDER ANURA Family Hylidae - treefrog Pacific Chorus Frog	They have slender bodies & legs with long toes.	This species has round toe pads wider than the toes & intercalated discs at the last toe joint.
ORDER ANURA Family Ranidae - true frog Northern Red-legged Frog	They have dorsolateral folds. In life, they have bright red coloring on abdomen & legs.	The extensive webbing on their hind feet is stepped down along the inner edges of toes more than the Spotted frog's webbing.
ORDER ANURA Family Ranidae - true frog Columbia Spotted Frog	They have dorsolateral folds & unevely edged black spots on the back often have light centers. Their hind legs are relatively short compared to other Ranidae.	They have more extensive webbing of the hind toes, i.e. less stepped down, than the other ranids seen in lab.
ORDER ANURA Family Ranidae - true frog Northern Leopard Frog	Their dorsolateral folds extend full length of trunk. The body is bright green or tan with larger & smoother edged brown or black oval spots than spotted frogs. The spots also have light borders.	The webbing on their hind feet does not extend to the tips of the toes - compare to webbing in spotted & red-legged.
ORDER ANURA Family Ranidae - true frog Bullfrog	They lack the dorsolateral fold that is characteristic of most of the family.	They have very large eardrums that are partly surrounded by a fold or ridge.