I'll agree with golf2140: a lap cat.
Because all the cats I've ever had led remarkably stress-free lives, always knowing where (and, often, when) food was going to appear; always having innumerable soft places to doze; always willing to entertain, when provided with the proper toys, etc., etc.
The only hazards: the human sometimes goes away and then the feline has to work his guile on a temp!
SWR
