In rare cases, axolotls can lose their gills and move onto ... which could include insects, worms, small fish, and tadpoles. However, like many amphibians, axolotls don’t have teeth.

But urban sprawl, contaminated water and non-native fish that like to eat young axolotls have led to the salamander’s near-total collapse, according to population surveys. The axolotl is not the ...