The Arctic fox is found throughout Greenland. It can grow up to 1 metre long, including a 30 cm bushy tail. There are two types of Arctic fox – the blue fox and white fox, which are genetically very similar, but in addition to fur colour, they also differ in lifestyle.
The blue fox’s fur is dark brown to grey-black all year round, while the white fox’s fur changes from entirely white in winter to brown in summer (with a whitish chest and belly). The winter coat is three times thicker than the summer coat and is considered to be the warmest coat in the world.
The blue fox is a coastal animal where it feeds from the sea: fish, seal cubs, crustaceans, clams, mussels, seabirds, bird eggs, insects and seaweed. The white fox, on the other hand, stays inland, where it mainly feeds on Arctic lemmings, and where there are none of these, on Arctic hares and some of the same things as blue foxes.
In the spring, the foxes form pairs that can last a lifetime. They live in caves underground that can be over 300-years-old and widely branched. The female gives birth to 5-10 cubs and up to 19, and so has some of the largest litters among predators.