That's atleast what it used to be ok with the old versions back in the day:
Baby- 1-10 lbs
Child- 10-20 lbs
Teenager- 20-30
Adult- 30-35
Try to keep your Tamagotchi at a consistent weight. When it is an adult, it's best at 30 or 35 pounds. If it's overweight, play games, and if it's...