Polar bears tend to eat animals with lots of fatty blubber which is why they prefer marine mammals. Generally, they do not eat arctic foxes and often (unwillingly) share food with them. This is because the polar bear will usually leave the meaty part of a carcass behind. Arctic foxes will follow polar bears and scavenge on these remains. Whilst polar bears do not normally eat arctic foxes when food is abundant, they must be cautious when food is scarce because the polar bear might get hungry and hunt it instead.