We rescued a Shepherd mix when he was 4 months old. We've always socialized him, we worked with him on training, he has really become an amazing dog. However, I found out I was pregnant in December and subsequently, was very sick for about 3 months. We haven't been taking him to the park as often, however we've still been taking him and working with his training.
Since he's turned a year old it's been like a light switch went on and he does not play well with other dogs at the park. Today, he went after a dog much smaller than him (don't understand why the small dog was in the large dog area) and also a dog attempted to dominate him and he seemed fine, but as soon as the owner pulled her dog off, he went nuts. (The dog was quite a bit larger than he was and he managed to pin it to the ground in 2 seconds and was being very aggressive) He's left puncture wounds on another dog, and it happened in a matter of seconds. I don't want to stop socializing him, but I don't know what to do. Can someone help?
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