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My sister-in-law rescued a 3 year old jrt. We were living with her at the time while our house was being built. and we have 2 lab mixes. Right off the bat the jrt marked any chance she got-urinating over mine immediately, mounting them. Then she started attacking my lab/german shepard mix, who thankfully is a gentle soul.
So, when our house was ready we moved out with our dogs. When my sisterinlaw visited the 1st time with the jrt, it defecated on the door mat, and the second time when she over, it came in and did the same on the dogs bed. Shortly after, it attacked my dog again, this time hurting my dog.
Now my sister-in-law is worried that the jrt has behavioural issues.
Has anyone heard of this type of behaviour, and is it an escalating issue? She is worried if kids come over and are rough housing, will the dog attack?