Ans.

Loose skin helps African elephants keep cool and naked mole rats burrow underground, for starters. Elephants have few sweat glands and can’t use them for regulating their body temperature, so they disperse heat in other ways, including through their baggy skin. The elephant’s wrinkled skin traps moisture in the hollows, which means it takes longer for the moisture to evaporate, thus keeping the elephant cooler for longer.

Take the naked mole rat, whose saggy skin makes to move around easier.