There brain look similar.
They all have tails.
Both birds and crocodiles have a four-chambered heart and a system of air sacs for breathing not found in mammals or non-crocodilian reptiles. The fossil record also indicates a lineage from archosaurs for both.
alligators are consumers because they eat meat
The inherited trait is instinctual and with them from birth while the learned trait is something they observe and use.
yes they are because they share a common trait....
size.
Both were Kings
They both have a spinal cord protected by vertebrae. That is the key trait of all vertebrates. So whales and sharks are both vertebrates.
there all mammals
both were rescued from the cannibals (APEX)
They share the smartness and the intelligentness. If you dont believe me look on ten different google sites. :)
an ethnic group
They have a flaw that will ultimately lead to their undoing.