Chow Chows are famous for their black tongues, a rare trait in the dog world that sets them apart from other breeds.
Giraffes have long, dark-coloured tongues that help them grab leaves from trees and protect against sunburn.
Polar bears have black skin and tongues, helping them absorb heat from the sun and stay warm in their icy habitat.
Known for its zebra-like stripes, the okapi has a long, black tongue that helps it grab leaves and clean its eyes.
The graceful impala uses its dark tongue to help it graze on leaves, blending in with the African wilderness.