An online resource based on the award-winning nature guide

Gender Differentiation

Sexing a Painted Turtle

painted turtle 035If you see a Painted Turtle on land at this time of year, chances are great that it’s a female on her way to or from laying her eggs. But how do you know the sex of a Painted Turtle at any other time of year? It helps to have both sexes in front of you, as it’s all relative, but in general, males have much longer nails on their front feet than females (good for gripping females during mating). Males also have longer and thicker tails. The cloaca (passageway into which the intestinal, urinary, and genital tracts open) of a male Painted Turtle is close to the tip of the tail, whereas the female’s cloaca is near the base of the tail. A super large Painted Turtle (8”-10”) is more likely to be a female, as their shells can grow to a larger dimension than those of males. (photo: female Painted Turtle)

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