The elephant seal has a nose that looks like a trunk, hence its name. When the time to mate comes around, the seals inflate their noses by nearly a foot or 30 centimetres! They face off in snorting contests to prove their value to the females.
Walruses on the other hand, puff up their necks to create a natural pillow. The two sacs keep the walrus afloat when it is sleeping in the water.
Among snakes, the puff adder is the only one that can inflate its entire body and let out a loud hiss for good measure. It is a large venomous snake found in some parts of Africa.
Picture Credit : Google