Because of their size and aggressiveness towards threats, brown bears are not often preyed upon. Humans have persecuted them throughout recent history and some cubs may be attacked by other bears or by mountain lions or wolves, although this is very rare.
- humans (Homo sapiens)
- other brown bears (Ursus arctos)
- wolves (Canis lupus)
- mountain lions (Puma concolor)
Anti-predator Adaptations: cryptic