Take care of your pet. Feed it, walk it, play, put it to bed. But be careful, for some activities will make your pet's energy or happiness go down, and every few moments, your pet loses 1 energy and 1 happiness. If your pet's energy or happiness is zero or below, you'll have to give them up. So if you notice your pet's energy or happiness lowering, boost it with certain activities. And if your pet gets too much energy, they might go a bit crazy. So have fun, but take care!