Well i received 2 leos from a friend of mine who was moving to an apartment where he cant keep animals, so he gave me his 2 leos (about 4 years old). I've had them for about a week and began looking through some pictures of leos and realized these two little girls are underweight, one more so than the other. but aside from them being underweight they seem healthy, very active, drinking and walking fine. I was curious of a way to fatten them up some before their weight becomes a serious issue.