Our Cooper was fine even at 14 months he was off the lead playing with an intact boxer but that changed when some daft muppet allowed their jack russel who was well known for going after other dogs to attack Cooper. It hung from his jowels for about a minute befor letting go and I had to position myself in between them for the jack russels own protection. Cooper just stood there and didn't have a clue what went on but the next time the jack russel went for cooper it was a different story. He nearly had him for breakfast. Now Cooper wants to get them (other dogs) before they get him and I had to work hard for the last 8 months to retrain Cooper not to go after other dogs. Still a work in progress so any advice is welcome. He's an entire Boerboel and excellent with the dogs he does know and great with kids. Your not supposed to trust any type of dogs with children and we have owned many but I'd say Cooper is as close to being trusted as any dog I've had or met. Silly thing to say I know but I see how gentle and canny he is round Ryan who is four and very submissive but protecting as well if you know what I mean with him. Take your staffy out at 5 or 6 in the morning on his own so he can get some exercise off the lead and through the day walk him long and hard so he can't be bothered with the other dogs. Too tired to cause any mischief. Expose him to as many dogs as possible so walk him in a busy dog area and plenty of praise and treats for positive behaviour. Consistency is the key. Good luck on transforming your staffy to being a well balanced and loved member of the family. Watch out for male dogs with their tails riding high and walking with the I'm the man type of attitude. Keep a close eye on them ones because they are trying to be dominant over other dogs.