Our Abyssinian is a serial killer, he is the best hunting tiger we ever had. Here he is only 5-6 months old, he did not kill the mouse himself. Our older cat caught it and gave it to him so he could play with it, and tune his instincts for hunting and killing. And he sure succeeded, the first summer (before he was one year) he caught more than 80 mice, several birds, and a weasel. And he also brought home an adult grouse. The bird was already dead, he found it in the forest behind our house and dragged it home, right into our living room. The bird was bigger than the cat!