AdvertisementCultureMoviesCinema This scientist quit her job in animal testing to fight for monkeys caged in the labs Kerrie O'Brien August 10, 2026 — 9:55am Save You have reached your maximum number of saved items. Getty Images As well as tracing Jones-Engel, Sentient features secretly filmed vision of what happens in animal testing laboratories, recorded by former workers. AdvertisementMassive breeding farms set up in part of Asia, such as Cambodia, supply thousands of monkeys a year to the UK and the US for use in animal testing. Towards the end of the film, alternatives to animal testing are explored, namely artificial intelligence and advances in science that mean artificial organs can be created in labs. There’s also an unexpected ally in Robert F. Kennedy Jr, who is pushing to phase out animal testing in the US.