I had a Jack Russel when I was about 6 years old. Dad would not let the dog in the house so the dog would go sleep on top of a cow if it got cold. The cow didn't mind and it was kind of funny to go out in the morning and see the dog sitting on the cow's back as she was up eating hay.
I knew this crazy guy that had a pair of them . The male was a little mean , likely because of his owner. Any time the owner would say "Osama Bin Laudin" the dog would go into some kind of angry fit. One day he got his face a little to close as he said it (while holding the dog) and the dog bit the end of his nose off and swallowed it! I just cracked up laughing spontaneously . The poor guy was bleeding profusely, and used most of a roll of paper towels trying to stop the bleeding so he could go to the hospital.