game looks awesome! PIRATE MAN!
It says when you walk the dog, it will have some encounters. It can find things to interact with, other puppies to play with, and other various occurances. It says when you return from walking you also have a wide array of "aftercare" to perform, such as shampooing your dog and brushing it so that you can clean it after it becomes dirty.
It says something about a "Dog Conference", which I think is an area that you train your dog in various stunts in preperation for 3 different "Tsugas(?)", one of which is "Dog Contest." You train him in hurdles, tunnels and other such obstacles. It says communication is important in order to have a good performance at the contest. Uh, I believe it says that if the mutual bond between you and the dog becomes deep you will receive treasures... also from winning contests.
It mentions how the game can communicate with other DS even when its idle. And that if you leave the power turned on and "insert it into your bag" your dog just "carries on", making the puppy meet, etc...
When you communicate with other players, you can exchange goods and also get certain puppies not included in your game (as mentioned in this thread.)
It says as also noted that each of the three games have 5 dog kinds where "sex, coat color and breed is different."