These chimpanzees have been mistreated by humans time and time again - but they still have love for them.
The video below, which was taken in 2013 but is making the rounds again, shows a group of chimps living on a Liberian island. They were formerly used in hepatitis research, but were released by the New York Blood Center (NYBC) after they outlived their usefulness.
Despite their rough treatment, these chimps hold no grudges. In the video, their favorite caretaker arrives on the island to check up on them. They eagerly run up to him, standing upright to wrap him in hugs and hooting happily.