Polar Bears can go days, even weeks, without eating — and often do?

To adapt to an environment where food is not always abundantly available, polar bears know how manage famine. If a polar bear is unsuccessful catching dinner for more than seven to 10 days, its metabolism will slow down until it finds its next meal.

During this time they survive off of their fat reserves, which is why the fatty ringed and bearded seals are a polar bear’s favorite entree. Sadly, climate change is making food harder to find and some bears are adapting by regularly cannibalizing their own kind.