Question

Which shared derived characteristic do reptiles, marsupials, and dogs have?

Amniotic egg
Fur
Retractable claws
Shearing teeth

Answer 1

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

Answer 2

Shearing teeth

Step-by-step explanation:

Just use process of elimination. Dogs don't lay eggs, reptiles don't have fur, neither of them have retractable claws, so the only one left is shearing teeth.