I agree its dominance. The fact that they didn't break skin or cause serious injury shows it was not an all-out attack. Dogs do this to establish the pack order. However, you never know when one dog will think it needs to take it to the next level. I'd not let Kibble around that dog unsupervised, meaning a leash on the aggressive dog and no ability to actually reach Kibble. Once started, this behavior is very hard to stop. Err on the safe side.
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LaVail Yorkshire Terriers |