I still don't understand what kind of a tool would ever think Watership Down, as book or movie, is meant for children. Sure it features bunnies but it's an allegory for a fascist state with genocide, bunnies suffocating in a sealed burrow and death galore.
I also remember this animated series about an animal odyssey to a new place when their forest gets chopped down. Farthing Wood, was it? On the one hand, they all talk and work together. On the other, some of them are carnivores. I still remember a scene where a field mouse sees his dead comrade penetrated on a thorn like a paper on a spike.
I know shrykes actually do that, but really, was that necessary to show?! Bambi is very sensitive next to this.