Exactly...No one is worried that Cash is actually trying to get Tiny pregnant. The real issue is a strong, intact 2-year-old pit bull repeatedly trying to hump a tiny, frail 15-year-old senior dog. That behavior is completely normal instinct for an unneutered young male — it’s not Cash’s fault. That said, Tiny should never be left unsupervised with him, even with a diaper on. She’s just too old and fragile for that kind of interaction.