Me and my wife were recently walking our 7 almost 8 month old puppy. (He’s one of the bigger ones of the litter). As we were walking our puppy Noble. We were walking our other dog who is a terrier. (A small but loud one) our neighbor dog got out and walked towards our terrier and started to growl and bark. Our course our terrier barked back but he backed off. Then his younger brother Noble pops out between my legs no barkings or anything lunges at our neighbors dog to back him off then our neighbor got him. Afterwards I see puppy Noble’s prancing and walked with his held high. What do you guys think? Opinion on his behavior or any similar situations ?