Internal fertilization with internal development
you need to have sex with a women and touch her personal parts and also use condoms ok
Whales are aquatic mammals, not amphibians.
no salamanders are amphibians mammals have hair, amphibians do not
Mammals.
They are mammals.
No, treefrogs are amphibians, not mammals.
Bisons are mammals.
Amphibians are naked while mammals possess hair on skin .
Dolphins are mammals.
no, there amphibians.
No. This is a characteristic of amphibians. the only mammals to lay eggs, platypuses and echidnas, do not lay them in a jelly-like substance.
Dinosaurs are more closely related to mammals. Both mammals and dinosaurs share a reptilian ancestor that they don't share with amphibians.
They are mammals.