It’s been a long-standing joke that Nintendo should do a cats version of Nintendogs, but we’re not sure anyone was taking it seriously…until now (cue ominous music). Crave has announced Purr Pals, a virtual cat simulation, for DS today. Sure they’re fun as kittens, but once that kitten grows up, how fun is it going to be to watch it cough up hairballs after licking its bum for four hours straight? Yeah…we just went there…