This is stuff I know Katie will like the most, though all purveyors of cute crap should find something they enjoy. First off, since Katie hardly ever goes to the gaming portion of the forum, some games that might up her alley....
First we have Kupuu! Mamegoma, which I guess is like Nintendogs but with baby seals?http://tinycartridge.com/post/120594127/ad-for-kepuu-mamegoma-the-third-game-in-tdk
Next is Hello Kitty's Panda Sports Stadium, which mixes two favorites in one ultra kawaii package...http://tinycartridge.com/post/150824891/hello-kittys-panda-sports-stadium-i-saw-a
Finally we have a game that I also learned about on Tiny Cartridge (which is like the best site ever, btw) featuring puppies at the office and at a bar...http://www.cyberfront.co.jp/title/inugaisha/
EDIT: found some more screenshots: http://www.andriasang.com/e/galleries/2008/12/15/inugaisha