Every Saturday I walk Dante on leash only. A couple months ago he attacked a little dog while I was petting a dog I once walked. Owner says a lot her dog never does that when she has seen it her self numerous of times. She actually knows it herself but denys it. I can tell listening to things she says like, "I do not want him to turn into a mean dog" or something else. A lot of the times when we walk by dogs on trails he looks at them no growling just looking. He is not neutered and is from Germany. If a dog is growling or pulling aggressively towards our direction like a terrier (who I see sometimes growling at me and the dog wanting to bite us) or another dog he seems like he is ready for aggression. The only dogs Dante does not attack are my own. However, last Wednesday I was playing with Dante and my own dog Riley and Riley started to play more rough play with me. Dante stopped Riley from getting more rough on me. Dante did not attack.