None.

This documentary contains lots of footage of animals being subjected to cruel and painful experiments. Sick, injured and dead animals can be seen in some of the footage.

Some people talk about how animals were mistreated and killed during lab research.

Chapter four contains footage that shows how monkeys were captured in the primate trade for vivisection. One dead monkey is shown.

Diseases are mentioned.

Scenes from Andrei Tarkovski's "The Sacrifice" show some dead people. The corpses are not fully visible.

Very mild language. One use of the word "shit".

Drugs and cigarettes are shown during the opening sequence.

There is some talking about animals being injected with drugs and chemicals.

Vivisection is the sole theme of this documentary, that contains numerous disturbing and upsetting footage of animal cruelty.

The story of Darla the Monkey is quite sad. The same can also be said about the story of Jerom the Chimp.