The creature – which has six legs – has stunned a BBC wildlife expert who said it could be an early warning of environmental problems.
Laura Pepper, from the Green Umbrella nursery in Weston-super-Mare, said: “We thought it was three frogs huddled together at first.
“It is very strange. The children couldn’t believe it.”
Mike Dilger, from the BBC Natural History Unit, said: “I have never seen anything like this.
“Frogs are primitive animals – so the occasional extra toe is not that unusual. But this is very unusual.”
Perhaps it was one frog, and some Cajun chef stuffed two other frogs into it. With dressing, $300.