White Mane attacks several other horses and gets into a long fight with another horse.

A group of men mistreat White Mane in an attempt to break his spirit.

Folco drops a basket trap full of fish into his boat. (one is seen flopping around).

An arson.

Folco terrorizes a hare, which is later shown cooking over a fire.

Etc.: Considering the age of the film it's difficult to tell if any of the violence toward the animals is real - although it doesn't look it. It may still be quite disturbing for some people.

Although the narrator says otherwise, the final scene looks like White Mane and Folco will die by drowning.