I'd love to train my Nintendog to be the best dog everyone's ever seen! Especially if it was on the 3DS! Sadly, that's all you can do in Nintendogs + Cats: French Bulldog & New Friends. Great for dog lovers.
It may not be leaps and bounds away from the original Nintendogs, but a few improvements and additions, regardless of gimmick factor, means that Nintendogs + cats does prove that the virtual pet genre is still alive and kicking.
Nintendogs + Cats has been outmanouvered by other stationary virtual pet simulators for both Move and Kinect, but will still any animal cravings you may have during a trip. But at home it's more likely to collect dust than play catch.