None.

Mild slapstick violence. The animated characters are designed by Chuck Jones of Looney Tunes fame, and the violence here is no worse than you would see in your average Looney Tunes short.

None aside from mild childish name-calling (a cowardly cat is referred to as a "scaredy cat, etc.)

None.

The animated characters are in peril in the latter half of the movie, but there is no violence apart from the slapstick cartoonish kind. The outcome is positive, and no one is injured/dies/etc.