How can you tell the gender of a lizard?

Answers:
It depends on the species you're looking at. There are thousands of species of lizard and they are all different. In some species you can tell by the size, color pattern or other factors but in others you can't tell just by looking. If you mentioned the species it would be a lot easier to answer your question.

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Not by listening to them. Even lizards with high pitched voices can be males. The lizard population also has a high percentage of transexuals. You can tell them because the males like to wear lots of lipstick.

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Take it shopping at the mall then see it it acts bored or excited.

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nice answers. most lizards being female and male have various things that separate them. if you take the lizard you are most interested in type it in google followed by sexing IE bearded dragon sexing. you will come up with various websites that will usually show you pictures on how to distinguish each. some have pores on the hind legs that help distinguish them as males. on beardies they have bumps etc. so comparing pictures is much easier than going through each lizard. and believe it or not there are hermaphrodite lizards that have both sex organs they are rare but they do exist.