Pig Frog vs. American Bullfrog

Both are big, ridgeless frogs of the lakes and swamps of far southeastern Texas. A: Webbed right to the tip of the longest (fourth) toe in the Pig Frog; the web stops well short of the tip of the longest toe in the American Bullfrog. B: Dark olive with bold dark spots; a narrower, more pointed snout in the Pig Frog; plain green or brown, or finely mottled; a broad, rounded snout in the American Bullfrog. Calls differ: the Pig Frog grunts like a pig, two to four times in a row; the bullfrog gives a deep 'jug-o-rum'.

Photographs via iNaturalist under Creative Commons licences; the photographers are credited on the sheet.

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