Private companies perform product testing on animals for almost anything imaginable.
Generally, the purpose is to examine the chemical toxicity on a living organism in order to understand its response on humans. In technical terms, this is known as the LD-50 test. However, the experimenters test for a wider range of responses other than for its lethality. In acute and chronic toxicity tests, animals are forced to ingest various substances through implanted stomach tubes, injection into the skin or abdomen, or gas mask. The tested products can range from mascara and ink to detergents and pesticides.