Seriously, I had only heard of it but I never experienced it until two days ago. My first child came to me and said our dog is angry. Lol. I laughed so much that my child got angry himself. Well, I went to the backyard to check on the dog. It wasn't looking happy really. Tried play with him but he won't playback. He's been acting angry and won't let anyone touch him. It is funny but my dog is so angry really, and I have no clue what is wrong with him
Although we may be unable to speak the same language, this does not prevent dogs from actively communicating with us. This can be done through their bodies, ear positions or barks, as well as other more subtle indications. Be patient with him to figure out what is really wrong. Dogs are like human, they're feelings too.
Just like you, a dog can get angry for various reasons: a lack of attention from its owners, pent-up stress or because you are trying to make it do something that it doesn't want to.
I think aggressive behaviour in dogs is often due to fear or some upsetting element during socialisation.
From my experience, a soft and constant growl doesn't only mean that the dog is angry, but it's also a warning for you to stop doing whatever it is that might be annoying it. When the frequency of a dog's bark increases and it shows its teeth, it's getting ready to fulfil its warning and attack. One just have to becareful and sensitive to dogs.
I will suggest you visit Ethologists or a dog trainers. They are trained professionals who are equipped to guide you and help you to overcome any serious anger problem in dogs. In the same way that you would take your child to a psychologist if they had a problem, you should follow a similar procedure with your pet. This way you have a better chance of improving their quality of life and relationship with the surrounding environment.
I hope that help.
The best thing to do is to NOT comfort him. Comforting seems the same as praising, to the dog and the nervous behaviour is reinforced. The very best thing you can do is take your dog to some type of class; obedience, or agility, or similar. Get him out in the big world and meeting people and being in chaotic, but controlled, situations.