These mammals are endemic to southern, southeastern, and central Asia and typically form large social groups. These creatures have a potential lifespan of 16 years in the wild.

Dhole

South American freshwater discus fish are unique. These omnivorous fishes have laterally-compressed bodies, thus the name. Bright colours and strange shapes make them popular aquarium pets.

Discus Fish

The dolphin gull is a coastal bird found in Argentina, the Falkland Islands, and southern Chile. The adult birds are grey, with darker wings than the rest of their bodies. They have crimson beaks and legs.

Dolphin Gull

Dusky dolphins are native to South America, New Zealand, and Southwest Africa. They are social animals that travel and hunt in groups. Their wild lifespan is 18 to 25 years.

Dusky Dolphin

Small dark-eyed juncos are common throughout North America. Gray sparrow-like birds with white tail feathers. In woodland areas, they forage on the ground for insects and seeds.

Dark-Eyed Junco

Donkeys, also called asses, are huge working mammals. Wild donkeys are endemic to Africa and the Arabian peninsula. Domesticated donkeys are distributed worldwide.

Donkey

Dugongs live in the Indian and Pacific oceans. Herbivorous sea cows graze on seagrass. These marine species are endangered owing to habitat destruction, hunting, etc.

Dugong

Dung beetles are found all throughout the planet except Antarctica. These come in varied sizes and colours and can easily roll around dung balls 50 times their weight.

Dung Beetle

Dingos are wild dogs endemic to Australia. These creatures have a slender body and a sharp hearing. They are gregarious animals that live in packs, while some prefer to be alone.

Dingo

South and Central Africa's Dassie rats are small. Rats live in rocky crevices to avoid raptors.They forage on the ground and deliver a warning call when they spot a predator.

Dassie Rat

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The dunlin, commonly known as the red-backed sandpiper. These birds are widespread in the Arctic, where they swarm to coastal locations. They have lengthy bills to probe the mud for food.

Dunlin