We have "labelled" our dog as being anxious, and as a result he isn't neutered yet, but I'm beginning to wonder if he isn't anxious after all and it's just his testosterone. He's 18 months.
He is quite unpredictable with other dogs, usually okay but gets his hackles up and growls at the occasional dog, usually male but not always. He's never been a dog who likes to play with other dogs, just have a quick sniff and move on.
He's quite guardy at home (barks at people walking past the house and runs to the back of the garden barking with his hackles up) which we've put down to him being worried but again, could just be asserting his manhood!
He's lunges and barks at cars but he's a herding breed so could be this rather than nervousness.
Anyone experienced similar in adolescence and has these issues fixed with neutering?