The cat skull is unusual among mammals in having very large eye sockets and a powerful and specialized jaw.  :35 Within the jaw, cats have teeth adapted for killing prey and tearing meat. When it overpowers its prey, a cat delivers a lethal neck bite with its two long canine teeth , inserting them between two of the prey's vertebrae and severing its spinal cord , causing irreversible paralysis and death.  Compared to other felines, domestic cats have narrowly spaced canine teeth, which is an adaptation to their preferred prey of small rodents, which have small vertebrae.  The premolar and first molar together compose the carnassial pair on each side of the mouth, which efficiently shears meat into small pieces, like a pair of scissors. These are vital in feeding, since cats' small molars cannot chew food effectively, and cats are largely incapable of mastication.  :37 Though cats tend to have better teeth than most humans, with decay generally less likely because of a thicker protective layer of enamel, a less damaging saliva, less retention of food particles between teeth, and a diet mostly devoid of sugar, they are nonetheless subject to occasional tooth loss and infection. 
A testosterone patch for women called Intrinsa has been approved in Europe but was rejected by the FDA due to concerns about long-term safety. But the drug has sparked a backlash from some medical and psychiatric professionals who question whether low sex drive in women should even be considered a condition best treated with drugs. They point to the results of a large survey in which about 40% of women reported some sort of sexual problem -- most commonly low sexual desire -- but only 12% said they felt distressed about it. With all the factors that go into the stew that piques sexual desire in women, some doctors say a drug should be the last ingredient to consider, rather than the first.