Male border terrier, neutered, 2yr old has now started "marking" or sprinkling. Why?
My 2yr old border terrier (neutered) has started to "mark" or "sprinkle" in the house and we have no idea why.
He also for no known reason launches himself at the 13 yr old labrador and bites his leg. Fortunately for the border the lab doesn't retaliate. I managed to stop him tonight for the first time by saying no as he leapt off the sofa when the lab came in the room. I do think this is a domination thing but not really sure what to do as I'm not always quick enough to stop him.
Any help appreciated.