 The tadpoles exhibit phenotypic plasticity, with some changing from an omnivorous morphology into a cannibalistic carnivorous morph with oversized jaw muscles and pronged beaks.In some cases, female spadefoot toads will choose to mate with "Spea multiplicata" rather than with males of their own species, if the resulting hybrid tadpole would have higher chances of survival.Character displacement has also been examined in ponds where "Spea bombifrons" and "Spea multiplicata" occur together.