Jukka Särkijärvi created stats for both polar bears and space hamsters for Valley of Eternity:

There are many strange things in the Antarctic, and the giant space hamster is probably the strangest. This white-furred rodent is the size of an elephant seal, but much quicker in its movements. Nobody is entirely certain where they come from or what these allegedly herbivorous creatures eat on the glacier. They are not very bright, but they are very active. Fortunately, they are not predatory, have no interest in the penguins’ eggs and do not even compete for the same resources, though they often seem to have mystical agendas which bring them in contact with penguin colonies.