Hi. Two weeks ago we get a new 2 month Boston terrier puppy. We have a 5 year old Boston already. Our older Boston was very nice to her at first – sniffing her playing with her. We keep her in a large pen and he sniffs around her and we thought she was getting comfortable with her. We tried introducing toys, but our older Boston was guarding and did not want to share with her so we stopped and give them individual play time. She also got near him eating and he warned her with a snarl – and she backed off. Last night she was walking out of her pen and was just walking near our olders dog bowl. Unprovoked he jumped on her latched onto her neck and would not let go. He cut her ear a little and she was extremely scared. We are trying to understand if this behavior is normal of our older dog. We keep then separated, they eat separately, he plays well with her but after two weeks he is extremely guarding of his toys and food to the point of attacking her. Is this how this goes with an older dog and puppy? Will he stop being protective over his things?
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