Some appear to enjoy being hand-fed. If the animal eats what is provided, put in a couple more food items to see if they are eaten as well, to help gauge the correct amount of food. Be sure to remove any crickets that are not eaten in a feeding, as they will annoy and unduly stress the geckos. Baby geckos that are getting enough food will shed every two weeks or so. Adults should be hefty, but not obese, and have a nice, fat tail.
Leopard geckos require a shallow dish for water and a calcium source.
Leopard geckos adapt well to captivity and have been known to live 20-30 years. They are not highly susceptible to health problems, and seem to enjoy being handled. Like many lizards, their tails will break off as a defense mechanism if handled roughly. The tail will grow back fairly quickly, although it will not be as elegant as the original. At this time the sexual characteristics of the male can be seen, especially if a magnifier is used.