That was deliberate, fiendish and cowardly murder. The killing of any female animal by her male consort is murder; but there are circumstances wherein the plea of temporary insanity is an admissible defense. In the autumn, male members of the deer family _often become temporarily insane and irresponsible,_ and should be judged accordingly. With us, sexual insanity is a recognized disease. Such distressing cases as the above are so common that whenever I go deer-hunting and kill a lusty buck, the thought occurs to me,-- "another undeveloped murderer, perhaps!" The most exasperating thing about these corral murders is the cunning treachery of the murderers. Here is another typical case: For three years a dainty little male Osceola deer from Florida was as gentle as a fawn and as harmless as a dove. But one crisp morning Keeper Quinn, to whom every doe in his charge is like a foster-daughter, was horrified at finding blood on the absurd little antlers of the Osceola pet. One of the females lay dead in a dark corner where she had been murdered during the night; and this with another and older buck in the same corral which might fairly have been regarded as an offensive rival. The desire to murder for the sake of killing is born in some carnivorous animals, and by others it is achieved. Among the largest and finest of the felines, the lions and tigers, midnight murders very rarely occur. We never have known one. Individual dislike is shown boldly and openly, and we are given a fair chance to prevent fatalities. Among the lions, tigers, leopards, jaguars and pumas of the New York Zoological Park, there has been but one murder. That was the crime of Lopez, the big jaguar, who richly deserved instant death as a punishment. It was one of the most cunning crimes I have ever seen among wild animals, and is now historic. For a year Lopez _pretended,_ ostentatiously, to be a good- natured animal! Twenty times at least he acted the part of a playful pet, inviting me to reach in and stroke him. At last we decided to give him a cage-mate, and a fine adult female jaguar was purchased. The animals actually tried to caress each other through the bars, and the big male completely deceived us, one and all. At the end of two days it was considered safe to permit the female jaguar to enter the cage of Lopez. She was just as much deceived as we were. An animal that is afraid always leaves its traveling- cage slowly and unwillingly, or refuses to leave it at all. When the two sets of doors were opened, the female joyously walked into the cage of her treacherous admirer. In an instant, Lopez rushed upon her, seized her whole neck in his powerful jaws, and crushed her cervical vertebrae by his awful bite. We beat him over the head; we spiked him; we even tried to brain him; but he held her, as a bull-dog would hold a cat, until she was dead. He had determined to murder her, but had cunningly concealed his purpose until his victim was fully in his power.