All Cretins Great and Small

Dr. Bill Frist on veterinary medicine:

The zoo has more than 2,600 specimens. The only thing most of them have in common is that they can be injured or sick, often because of old age, because animals in captivity usually live much longer than those in the wild. Not a single one can tell its caretakers what is wrong. In fact, nature teaches many animals to hide their infirmities from predators.

Shorter Dr. Frist: It's not my fault, the kittens never said "don't kill us."