A bird yells at the rabbits saying "you have no mates!" Implying he wants to see them multiplying with female rabbits but most of the female rabbits were killed.

A dog's genitals are briefly visible during a climax scene (not shown in a sexual context).

During a meeting between two brother rabbits and the chief rabbit, the chief mentions that they're in the middle of May, which is mating season.

Infrequent mild references to the need of does (female rabbits) to sustain the warren.

A rabbit threatens to kill another rabbit. He bites a tuft of fur off of said rabbit but is jumped on before he can do anything else. No blood is shown.

A rabbit is attacked and killed by a hawk off-screen.

Two rabbits are hit by a train. This all happens very quickly and there is no blood as both rabbits disappear from the tracks seconds after getting hit.

A total of 63 rabbits are killed onscreen in the movie.

This violence contains severe for strong animal violence and gore.

A black-headed gull tells one rabbit to piss off. The word "damn" is also used.

The rabbits call each other mild names.

A rabbit finds a smoldering cigarette near a fence post, which he seems to fear will start a forest fire.

The violence depicted in this film is notoriously shocking and disturbing (some scenes where large quantities of blood and gore are clearly visible).

While what is listed in the categories of Sex/Nudity, Profanity and Alcohol/Drugs/Smoking seem acceptable for a PG rating even today, the levels of Violence/Gore and Frightening/Intense Scenes present in the film would most likely surpass that rating by today's standards.

Recommended rating: PG-13 for intense animal violence and gore, and disturbing images.

Several scenes contain very strong, potentially nightmarish images.

In the climactic sequence, a rabbit is caught by a cat who is able to kill him, but the cat's human guardian orders her to back off before she does any harm.

The music and general mood of the film is rather bleak, surreal, and intense.