This page will highlight K9 Officer Abuses against Suspects and Inmates.
I call into question that animals are used to attack humans. I believe that such acts violate the First Amendment of the U.S. Constitution, Freedom of Religion. This passage in the Bible summons up why I believe it's unconstitutional to use dogs to attack humans.
Mauled: When police dogs are weapons, https://www.al.com/news/2020/10/when-police-violence-is-a-dog-bite.html