Documentaries about animal cruelty and killing (DISTURBING)

Here is my list of my watched documentaries that have animal cruelty and killing as a sole theme. These films are not made for entertainment or laughter, they are very serious as they document the various forms of cruelty animals go through: Vivisection, experiments, science, slaughter, violence, entertainment, etc. If any heart-fainted or animal lovers are seeing any of these films I've put on my list, they may get disturbed or upset, and will most likely turn away from them.

Movies such as the "Faces of Death" series, "Shocking Asia" series and the "Mondo Cane" series also tend to have scenes of animal cruelty. But I didn't include any of these films to the list, because in my list here, the films must solely be about this subject. Most of the videos listed here are from animal rights groups such as PETA, Mercy for Animals and the likes, along with some TV documentaries, and feature films like "Earthlings".