>>/896491/
Not enough bruising for a dog but I couldn't really think what else would have done that. 
 >>/896494/
Maybe he kicked someone who had a knife and got stabbed repeatedly. You might cop cuts like that on a bike if you came up against a barrier, but that many? 
 >>/896495/
No but serious comment, if the cut is that deep it just won't close over so you need stitches even if it's not bleeding badly.