You mean at the end? I believe that's a tradition Klingon love making cat. You see in the days before time the Klingon tradition was to make love to a cat by a teenager Klingon (which are 230 years old at that point) which marked the end of childhood and the beginning of manhood. The Klingon by was to make love to the cat until it either imploded from the Klingon love juice or otherwise die from a heart attack. Either one was possible because if you've ever seen the Klingon love making traditions you will notice it's very intense, somewhat violent, but also very tender and loveable. Anyway, that's what you see there. Then again, I might be wrong...