Fat bear ate 135,000 calories in 10 hours. And he's not done.

Imagine not eating for half a year.For the Alaskan bears of Katmai National Park and Preserve, the long winter famine always looms large. So they eat. And eat. And attempt to grow profoundly fat, because they must subsist off their fat stores for months. That's why, in this wild northern realm, a fat bear is a healthy bear. One of the largest and most dominant bears of Katmai's Brooks River — a salmon-clogged region of the park that's livestreamed on explore.org — is bear 32, "Chunk.