My name Natasha and my wee dog/baby is Diesel. Diesel is 11 months old and is a lovely week boy(mostly). Diesel is great with kids and my kids love him. BUT Diesel is not good with other dogs. He will try and attack so will be purchasing a muzzle. Is there any way of being able tell what type of aggression it is? fear aggression etc. We intend to get him neutered but if we could figure out what is causing the issue we could possibly work on it while he's still young.