An aggregation of wood frog egg masses in a pond following spring breeding. Wood frogs are explosive, synchronous breeders that arrive at temporary freshwater ponds soon after snowmelt to reproduce ...

Workers are continuing to reintroduce state-endangered crawfish frogs to the Angel Mounds Historical Site. The multi-year ...

When Xenopus frog eggs are experimentally ruptured, their cytoplasm rearranges itself to form compartments similar to cells, according to a study published October 31 in Science. The researchers, led ...

Frogs mate in a position called amplexus, with the smaller male clasping the female from behind in a ride that can last two days or more. As she lays eggs, he expels sperm to fertilize them.

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