I've come here to seek some advice on how to tackle the aggressive behaviour that my GSD has been showing recently and greatly appreciate any possible solutions to try.
Firstly about my dog; he is just over 18 months old now, he was diagnosed with EPI (Exocrine Pancreatic Insufficiency) when he was just under a year old. Due to this because of weight issues he has only just been neutered which was about 3 weeks ago and of course his hormones will take time to settle. This is a good age if you are going to neuter. Most research shows that neutering younger impacts growth and development. Given your dogs history I may have been tempted to wait even longer
Growing up we never really had any issues with him, he was well behaved for a puppy. Although he has always been cautious by the signs of his hackles and tail curling up. For some reason things have changed with how the way he now is from back then which is quite upsetting to me as I know deep down he is a lovely dog speaking of which there are absolutely no issues with anyone in the house and he is very loyal, playful and loving.
Recently after he recovered from his operation he did chase a young puppy. My dog was off lead and the puppy came to greet him offlead. They were sniffing at each other face to face for a few seconds everything was fine but then my dog showed very bad aggression, chasing the puppy looking as if he was going to bite it! Of course I was very embarrassed and let down, the owners of the puppy were very shocked as well.
Only thing I could think of that he has shown with other dogs is if the dog is jumpy/giddy and moving around a lot which the puppy was doing.
This seems normal, but since we cannot see it who knows. Many adult dogs appear intolerant of puppies when in fact they are simply showing them what is and is not appropriate
I am going to list some points where he has shown aggression regularly but not all times.
- He will not like us trying to pet other dogs or other dogs coming close to us trying to get close attention.
This is resource guarding. Read up on that. You are the resource
- On some occasions he will bark/growl at people trying to pet him but sometimes he is completely fine with it.
I don't like everyone and it's sort of unreasonable to expect our dogs to be ok with multiple random people touching them
- Does not like dogs at all near his sticks/toys/treats, this is a big one.
Again resource guarding. But really, other dogs should not be near his toys and treats
- Was completely fine with my grandma but now starts growling and snapping?! This is one I am very confused about. Since a puppy we would visit my Grandma and she would come to our house but he has been very naughty recently
We have bought him a muzzle now as we are afraid of what he could potentially do to another dog. I dedicated a lot of time bringing him up to be a great dog which he is but this is letting us down a lot recently any advice would be appreciated thanks.