Coprophagy is seen in

The correct answer is (c). Rabbits are the only mammals that practice coprophagy, which is the consumption of feces. This behavior is thought to help rabbits to extract nutrients that were not fully digested the first time around. It can also help to recolonize the digestive tract with beneficial bacteria.

Frogs (a) and squirrels (b) do not practice coprophagy. Frogs are carnivores and their diet consists mainly of insects. Squirrels are omnivores and their diet consists of a variety of things, including nuts, seeds, fruits, insects, and small animals.

(d) is also incorrect because coprophagy is seen in rabbits.