I have a bunch of these old ones, and I love them! I'm quite good too; I got my frog to live over 200 days until the battery died. Try taking it to the vet once per day and bathing it once per day. That alone will raise your health score by 5 points. Make sure it stays happy by playing games with it, and don't let its poop pile up. That will bring health down. Also, snacks raise the hunger score by 5 points. If you feed your pet a snack when its hunger is 95 or higher, the health will drop one point even if the snack is a reward. Once your pet learns a trick, its discipline score will raise even if you don't reward it afterward. If you are in desperate need of a couple health points before midnight (as in you have a pet that is 14 or older and its health is below 95), let the hunger drop to 0 and let your pet beep to let you know its hungry. Don't wait until it tells you it wants food! Once the attention icon is blinking, feed your pet a meal. The health will go up by one point.