The two bumps that are below the vent are male.

The holes that are above the vent and are in a 'v' shape, don't rise above the skin, but go down, as if someone took a needle and made a bunch of pin pricks in a 'v' shape. Those "v" shaped pricks are where the male sexual organs come out of when the male and female are having sex. The females won't have the v or the big bulges at the base of the tail.

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