This seems to leave no doubt that a crime was committed ...imo.
http://www.kptv.com/story/23930926/dog-brings-home-dismembered-human-leg
"A pathologist will look at the body parts to figure out if it's a man or woman. They'll also look at the bones to see what kind of instrument might have been used to dismember the body."
http://www.kptv.com/story/23930926/dog-brings-home-dismembered-human-leg
"A pathologist will look at the body parts to figure out if it's a man or woman. They'll also look at the bones to see what kind of instrument might have been used to dismember the body."