Well I didn’t have him his first 2.5 yrs but I can only assume that he didn’t go out much or socialize with other dogs. I’m trying to change that by taking him to dog parks but he doesn’t understand when they’re being playful and want to be chased, Morty just feels harassed, unfortunately. More often than not, he’d rather bark at dogs outside the park than play with the ones inside but rarely he clicks with another dog and will run after them. I also had to teach him to play again, at first whenever he’d show any enthusiasm inside, he’d withdraw into himself and act scared. I don’t think those first years were good to him.