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Wolverine

Gulo gulo

Old Norse Mountain Cat

The name “Vielfraß” for the largest of all martens likely originated from a translation error: the Old Norse “fjellfräs” became the German “Vielfraß,” even though it actually means “mountain cat.”

The wolverine’s dietary habits change with the seasons: during the summer months, this large predator has a hard time sneaking up on its prey silently. Therefore, its main diet at that time consists of young shoots, berries, and carrion. Live prey, such as young reindeer or moose, is rare. In the winter months, however, it has the advantage over most other predators, as it usually does not sink into deep snow and can sneak up on its prey silently. During this time, it feeds primarily on meat.

Did you know?!

The mating season for wolverines is in the spring, but the egg then undergoes a period of dormancy lasting several months. The embryo continues to develop only during the winter months, and after a total gestation period of up to nine months, the young are born.

Glutton
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Glutton
Glutton
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Glutton
OrderPredators
FamilyMarten
DistributionScandinavia, northern Russia, northern North America
Habitat
Coniferous forest
Native to coniferous forests
Food
Omnivore
Mice, snow hares, ptarmigans, moose and reindeer calves, scavengers; in the summer, also berries and young shoots
Activity
nocturnal
Wolverines are nocturnal animals
Weightup to 30 kg
SizeBody length up to 100 cm, tail length up to 45 cm
Service lifeup to 10 years old (zoo: 18 years old)
ReproductionGestation period: 30–40 days (dormant for up to 7 months), 2–4 young
Risk
Level 1
Wolverines are not endangered
EnemiesWolf, human; young animals: bear, lynx, fox, eagle
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