No they do not have scales or hair
amphibians have skin not scales if i am not mistaken
No crocodiles are NOT amphibians they are reptiles amphibians have skin not scales.
reptiles have scales (hard skin) to protect them and anphibians don't
Salamanders are anphibians
no they dont
No, they are mammals.
Yes they do.
Snails are invertebrates. :)