My 5 year old spayed female dsh eats plastic bags and wrappers and the shower curtain. Occasionally she will eat foil wrappers and styrofoam. I don't know why she does this, other than she is neurotic. I have also had problems with her urinating in places other than the litter box (including on the vet and in the carrier on the way to the vet's to check for a uti). I have tried amitryptilene (Elavil) which caused her to hide under the chair and not come out (very unusual behavior for her) and fluoxitene (Prozac) which she promptly threw up every time I gave it to her. I have talked to the vet about it because she has recently had small amounts of blood in her vomit along with whatever she has eaten and thrown up. The vet said she may have given herself an ulcer and to give her 1/4 tablet of Tagamet. I haven't tried this yet, but she hasn't been vomiting lately. I try to keep everything that she might eat out of reach, but she still seems to find things that I (or more often my husband) have overlooked.

In addition to my pica cat, I have a second cat, neutered male, approx. 5 years old, unrelated, who licks the shower curtain, plastic grocery bags and garbage bags, and himself when you pet him. Maybe they are just nuts because they have such easy lives!