It is hard to guess what a Northern fur seal weights. But we have the answer:
An adult Northern fur seal (Callorhinus ursinus) on average weights 55.58 kg (122.54 lbs).
The Northern fur seal is from the family Otariidae (genus: Callorhinus). It is usually born with about 5.35 kg (11.8 lbs). They can live for up to 35 years. When reaching adult age, they grow up to 1.74 meter (5′ 9″). Usually, Northern fur seals have 1 babies per litter.
As a reference: An average human weights in at 62 kg (137 lbs) and reaches an average size of 1.65m (5′ 5″). Humans spend 280 days (40 weeks) in the womb of their mother and reach around 75 years of age.
The northern fur seal (Callorhinus ursinus) is an eared seal found along the north Pacific Ocean, the Bering Sea, and the Sea of Okhotsk. It is the largest member of the fur seal subfamily (Arctocephalinae) and the only living species in the genus Callorhinus. A single fossil species, Callorhinus gilmorei, is known from the Pliocene of Japan and western North America.
Animals of the same family as a Northern fur seal
We found other animals of the Otariidae family:
- Subantarctic fur seal bringing 92.21 kilos (203.29 lbs) to the scale
- Australian sea lion bringing 189.14 kilos (416.98 lbs) to the scale
- California sea lion bringing 137.6 kilos (303.36 lbs) to the scale
- Juan Fernández fur seal bringing 95 kilos (209.44 lbs) to the scale
- New Zealand sea lion bringing 273.67 kilos (603.34 lbs) to the scale
- Guadalupe fur seal bringing 101.03 kilos (222.73 lbs) to the scale
- South American fur seal bringing 68.14 kilos (150.22 lbs) to the scale
- Galápagos fur seal bringing 39.47 kilos (87.02 lbs) to the scale
- South American sea lion bringing 194 kilos (427.7 lbs) to the scale
- Antarctic fur seal bringing 96.6 kilos (212.97 lbs) to the scale
Animals with the same weight as a Northern fur seal
As a comparison, here are some other animals that weight as much as the Callorhinus ursinus:
- Spinner dolphin with a weight of 50.5 kilos (111.33 lbs)
- Caspian seal with a weight of 62.33 kilos (137.41 lbs)
- Spectacled porpoise with a weight of 65 kilos (143.3 lbs)
- Impala with a weight of 52.45 kilos (115.63 lbs)
- Philippine deer with a weight of 49.1 kilos (108.25 lbs)
- Celebes warty pig with a weight of 53.46 kilos (117.86 lbs)
- West Caucasian tur with a weight of 60.73 kilos (133.89 lbs)
- Grant’s gazelle with a weight of 55.46 kilos (122.27 lbs)
- Aardvark with a weight of 56.85 kilos (125.33 lbs)
- Philippine deer with a weight of 49.46 kilos (109.04 lbs)
Animals with the same size as a Northern fur seal
Not that size really matters, but it makes things comparable. So here are a couple of animals that are as big as Northern fur seal:
- Sloth bear with a size of 1.6 meter (5′ 3″)
- Sambar deer with a size of 2.04 meter (6′ 9″)
- Ross seal with a size of 2.07 meter (6′ 10″)
- California sea lion with a size of 2.02 meter (6′ 8″)
- Taruca with a size of 1.55 meter (5′ 2″)
- Tiger with a size of 1.83 meter (6′ 0″)
- Eld’s deer with a size of 1.65 meter (5′ 5″)
- Pygmy hippopotamus with a size of 1.6 meter (5′ 3″)
- Antarctic fur seal with a size of 1.57 meter (5′ 2″)
- Sea otter with a size of 1.44 meter (4′ 9″)
Animals with the same litter size as a Northern fur seal
Here is a list of animals that have the same number of babies per litter (1) as a Northern fur seal:
- Herbert River ringtail possum
- Brazilian big-eyed bat
- Tweedy’s crab-eating rat
- Ruwenzori otter shrew
- Livingstone’s fruit bat
- Micronomus
- Red-necked pademelon
- White-bellied duiker
- Commerson’s roundleaf bat
- Dent’s mona monkey
Animals with the same life expectancy as a Northern fur seal
Completely different animals, but becoming as old as a Northern fur seal:
- European wildcat with an average maximal age of 31 years
- Anoa with an average maximal age of 36 years
- African buffalo with an average maximal age of 29.5 years
- South Asian river dolphin with an average maximal age of 28 years
- Northern giraffe with an average maximal age of 36.25 years
- Hamadryas baboon with an average maximal age of 40 years
- Southern pig-tailed macaque with an average maximal age of 34.25 years
- Bobcat with an average maximal age of 32.33 years
- South American tapir with an average maximal age of 35 years
- Brown woolly monkey with an average maximal age of 30 years