Grizzly Bear (Ursus arctos horribilis) Adult with Chum (Oncorhynchus keta) Salmon male. During the Salmon Spawn in Costal areas grizzlies frequent stream and rivers to feed in preparation for winter. Bears gain hundreds of kilograms of fat during the spawnimg season. Although considered a carnivore they are actually omnivores since their diet consists of both plants and animals. The Chum is a Pacific Salmon and may also be known as 'Dog or Keta' salmon. Fish Creek Tongass National Forest Alaska United States of America.