Harvest Moon: A Wonderful Life Special Edition

You get your dog as soon as the game starts. He starts off with 5 hearts, and you need to raise it to 10. You can check your progress under "Assets" in your Diary (where you Save and Sleep).

To raise your dogs affection make sure you feed him once a day by putting food into his bowl. He's not picky, so feed him whatever you want (or what's cheapest!) and pick him up with at least once a day and immediately put him down with . I'm not sure if training him speeds up the process, but considering that the game time is stopped during training, I did it anyway. You can train him by pressing when standing in front of him.