On my 16th birthday, I asked for a cat of my own: a delicate and high-strung silver point Siamese. I named her Ina after a cat that lived on the shoulder of a hippie I’d met downtown the previous summer. Ina was a very anxious cat, not in small part because of the way we taunted and teased her.Ina produced a litter of kittens whose father we never identified because the kittens were