He was taken by CPS when the family dog bit him in the stomach. Apparently this dog had attacked others before, and authorities had warned the parents several times to do something about it. They ignored the warnings, and when the dog bit the boy they deemed the parents negligent.
While he stayed with me I had to tend to his stomach wound, which was pretty deep, applying an antibiotic cream supplied by the emergency room. Within several weeks the parents got rid of the dog and their child was returned home.