Police sent the dog, Jaris, into a home in the 9500 block of Mango Avenue in Fontana about 12:30 p.m. when the suspect, Bryan Bills, 28, of Fontana, refused to surrender.
When Jaris ran toward Bills, Bills used the dog's momentum to throw the animal out of an open window. The dog fell on his head on the concrete below, police said.
The dog suffered a large gash on his head. He was bleeding from his nose and staggering.
He is being examined by a veterinarian today.
Bills was arrested on suspicion of injuring a police dog, resisting an officer and violating parole. He was booked into West Valley Detention Center in Rancho Cucamonga.
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