There's a new twist to this story, my stepdad said that's not where the dog got him, he attacked the flank. There was no blood for several hours afterward. Could this be a bite from a wild animal or something he got on his own in the backyard? He goes out for 20 minutes unatended sometimes but it's all fenced and dog proofed. A coyote did manage to jump the fence (4 ft chain link), run through, and over the other side once but Niņo chased him/her out. It's freaking me out that I don't know what caused this and so we're taking him to the vet tomorrow most likley.
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