No.
No.
polar bears
mega bears eat salmons also berries but no humans
Adult sun bears have few predators other than humans. Some predators to the sun bear are tigers, large reticulated pythons, leopards, and the sun bear's larger relative, the Asiatic black bear.Sumatran tigers have been known to prey on sun bears on occasion. Komodo dragons, reticulated pythons, and saltwater crocodiles will also eat sun bears.
Bears
i think that bears get hungry when they get around humans because they love to eat meat.
No. Polar bears will eat a human.
No. Sun bears and leopards live in different biomes, thus never meet.
only black bears eat wild dogs but if you do include the humans than it will be black bears and humans but its only black bears for this question.
Fish :D
Polar bears
bears and humans