Base weights are
baby 5-7 lbs
child 10-12 lbs
teen 20-22 lbs
adult 30-32 lbs
*if the tama is at any of these weights, it will refuse to play games.
** If your tama is at Its base weight and it evolves, it will go on to the base weight of the next stage; for example, if your tama is a child and is 10 lbs and it evoves into teen, it will become 20lbs.