he wasn't... he was just with me and when he was a puppy he was so scared of other dogs that i stopped taking him around other dogs and now... he's aggressive with them
so i guess this is my fault...

how can I fix it.
Everytime he's around another dog (and anyother animal) its like he isn't himself, he becomes killer Castor Pollux.
I don't want to take him around other dog bc I don't want any animals getting hurt...
Do you think getting another dog will help the situation?