You also need to know what gender your reptile is. When you know what sex your pet is, it is time to find it a mate. One indicator of gender is color.
Males tend to be more vibrant in color than females.
This is associated with the mating process. Determining gender is easier in a lizard than it is in a snake. For lizards, you tell a male by a longer, thinner tail. You probably want to go to a veterinarian to be absolutely certain of its gender. Then again, you could always get what is called a sexing probe.