The Arctic has a wider variety of animal life than Antarctica. The North Pole is in the middle of the Arctic Ocean which is surrounded by the land masses of North America, Europe and Asia so there is a land connection meaning that land animals can more easily reach the Arctic unlike Antarctica where animals must be able to swim or fly there across hundreds of miles of frigid and storm-prone ocean even at the narrowest point.

The animals of the north polar region can be seasonal visitors at the edge, permanent residents of the High Arctic or anywhere in-between.

Arctic Animals - A List of Animals Found in the Arctic
Antarctic animals - south polar

Land Mammals

arctic animal
Arctic Fox - Vulpes lagopus

arctic hare
Arctic Hare - Lepus arcticus

arctic animal
Arctic Wolf - Canis lupus arctos

Caribou / Reindeer - Rangifer tarandus

moose / elk
Moose - Alces alces

dall sheep
Dall Sheep - Ovis dalli

Ermine - Mustela erminea

Lemming - Lemmus lemmus

Musk Ox - Ovibos moschatus

polar bear
Polar Bear - Ursus maritimus

sea otter
Sea Otter - Enhydra lutris

snowshoe hare
Snowshoe Hare / Snowshoe Rabbit
Lepus americanus

wolverine animal
Wolverine - Gulo gulo

arctic skua
Arctic Skua - Stercorarius parasiticus

arctic tern
Arctic Tern - Sterna paradisaea

bald eagle
Bald Eagle - Haliaeetus leucocephalus

canada goose
Canada Goose - Branta canadensis

Brunnich's Guillemots - Uria lomvia

Ptarmigan - Lagopus muta

Puffin - Fratercula arctica

snowy owl
Snowy Owl - Bubo scandiacus

snoe goose
Snow Goose - Chen caerulescens

Other Animals

Arctic Woolly Bear Moth caterpillar
Arctic Woolly Bear Moth (caterpillar)
Gynaephora groenlandica

Beluga Whale - Delphinapterus leucas

greenland shark
Greenland Shark
Somniosus microcephalus

Narwhal - Monodon monoceros

orca - killer whale
Orca - Orcinus orca

bearded seal
Bearded Seal - Erignathus barbatus

harp seal
Harp Seal - Pagophilus groenlandicus

hooded seal
Hooded Seal - Cystophora cristata

ribbon seal
Ribbon Seal - Histriophoca fasciata

ringed seal
Ringed Seal - Pusa hispida

spotted seal
Spotted Seal - Phoca largha
Walrus - Odobenus rosmarus
Picture credits:

Creative Commons Attribution 2.0 license: Arctic Skua - Donald Macauley, Arctic Wolf - tsaiproject, Bald Eagle - Ron Holmes of U.S. Fish and Wildlife Service Northeast Region, Dalls Sheep - National Park Service Alaska Region, Greenland Shark -, Arctic Woolly Bear Moth - Mike Beauregard, Harp Seal colony ~Dawn~ from Saratoga California USA, Lemming - Sander van der Wel, Puffins - U.S. Fish and Wildlife Service Headquarters, Snow Goose - U.S. Fish Wildlife Service Headquarters, Snowshoe Hare - Denali National Park and Preserve, Snowy Owl - U.S. Fish Wildlife Service Headquarters,  Spotted Seal - Tomomori.

Creative Commons Attribution 3.0 license - Arctic Fox - Algkalv, Beluga - Premier gov ru, Ermine - 4028mdk09, Ringed Seal - Alexander Butakov.

All other images are copyright of or are in the public domain.