Yes. There were recent reports in Vancouver of a black bear that was found dead, with necropsy evidence suggesting a cougar killed it. It's possible that black bear was a just-weaned cub and probably tried to defend itself from the cougar but lost.
Bears are stronger than cougars
Not normally. Bears can kill cougars, but cannot catch them in flight. Cougars are much faster.
No, there are bears and coyotes but no cougars.
Black bears, grizzly bears and wolf packs will occasionally attack and kill cougars.
grizzly bears are very peaceful animals and only attack if their home or cubs are being threatened so it is usually people wolfs or cougars was that your question????
Humans
bears or lions
cougars try their best to avoid each other.
Wolves, cougars, bears
cougars, bears, people
bears and wolves
wolves,cougars,bears