Lots of slapstick shenanigans.
A fox catches 2 birds throughout the movie, we don't see him kill them onscreen but we can see him carrying them in his mouth afterward.
Very early in the film a dogs mother is killed by a tiger. This does not happen onscreen, it just shows the camera zooming in on the tiger's mouth and then cuts to black.
It's implied a man beat a dog. We do not see this on screen but we can hear the beating.
Some dogs fight zoo animals, this fight while still being relatively silly is more intense that the other slapstick fights in the film.