Question

Hey guys can anyone help me? I have been stuck on this one for a while.

The diagram below shows the branching tree diagram for cats.
(The diagram is at the bottom)
Which shared derived characteristic do reptiles, marsupials, and dogs have?

1)Amniotic egg

2)Fur

3)Retractable claws

4)Shearing teeth

Answer 1

I believe it is 4)Shearing teeth (Carnassial teeth)

Amniotic egg are for reptiles

Fur are for marsupials, and dogs

Retractable claws are are cats

Shearing teeth are for carnivores