I don't know but mine is now 18 or 19 and she was the one still playing with the Raccoon before it got waffled by a car. She is now kinda lowly and depressed. I think I gota put her on paxil or something ...

I have a theory, they never die, they just re-inflate and go live with someone else. Mine still acts like a kitten and she is older than dirt. Love the critter