Would you say this squirrel has been eating flesh? Check out the bloody teeth (click image to view larger).
focal length: 23.8 mm (142.8mm in 35 mm equivalence), aperture: f/3.5, shutter: 1/160, distance: ~0.5 m
I took this on Boston Common. Those squirrels have clearly learned that people won't hurt them and might even give them them food: he was only about 2 feet away from the lens. I didn't feed him.