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I have two JRTs. One is very laid back. The other has the traits of a typical JRT that sometimes urinates on our bed. Both of my JRTs sleep on this same bed with my wife and I. She did this before and even after we had her fixed. I've had to purchase a new king size mattress so you see my concern. I love both of them like children. By the way....they're both females. Please help.