I found a Nintendogs cartridge down the back of a booth couch in a Pizza Hut and was instantly smitten with the previous owner's puppy. I looked after him for about two years before getting a Wii and forgetting about my DS games.

Anyway the game is fun but lacks content unless you manage to find rare items like the RC Helicopter or Mario Go-Kart. Nowadays there simply are similar and better games.