DH was walking him in park enforce work as normal, playing fine with 2 other dogs (although DH hadn't seen them before). I think they were behind DH when it happened as he said he heard a yelp, looked round and the two dogs were chasing ours ( he does like a good run/chase!). Owner called them back and went on her way.
Our dog acted normally, until nearly home DH noticed blood. On closer inspection quite a long wound but not deep. So off to the vets, GA, stitches, picked him up at teatime.
Now feeling very sorry for himself, sleeping beside me.