Axolotls (Ambystoma mexicanum) are neotenic amphibians, which may be related to their ability to reg

Axolotls (Ambystoma mexicanum) are neotenic amphibians, which may be related to their ability to regenerate limbs. Although very common in the pet trade, they are Critically Endangered in the wild due to habitat loss and introduced species. 

Photos:Poecilia,Jan-Peter Kasper