Elk are mammals.
American Bison, Bears, Bighorn Sheep, Bobcats, Canada lynx, Coyotes, Elk, Moose, Mountain Goats, Mountain Lions, Mule Deer and White-tailed Deer, Gray Wolf, Small mammals, Birds, Amphibians and reptiles And fish
Fish are fish, their own group. Frogs are amphibians though.
Fish, and then amphibians, and then reptiles, and then mammals
No. Clownfish are fish. Amphibians include frogs, salamanders and caecilians.
an elk is a herbivore
Fish, reptiles, and amphibians, originated in that order during the Paleozoic era.
axotles = amphibians
Fish
Fish appeared earlier. Amphibians later branched off from them.
Fish aren't amphibians. Among other things, amphibians can breathe out of water, something most fish can't do.
the amphibians have a three chambered heart whilst the fish have a two chambered heart.
fish, specifically "mud" fish or lung fish.