Lianne is a veterinarian, epidemiologist, and freelance writer who's written almost 400 write-ups for The Spruce Pets.

You are watching: Red eared slider boy or girl


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It is often difficult to identify the sex of a pet turtle, specifically if girlfriend did not purchase it from a breeder the hatched castle from controlled temperature environments. The temperature throughout egg incubation is what determines whether an embryo will end up being a male or female; cooler incubation temperatures develop males and also females build in warmer temperatures.


Thankfully there are some types of turtles the make it less complicated than rather to identify a masculine from a female without knowing their incubation temperature. Red-eared sliders, for example, show sexual dimorphism and have distinct distinctions in size and appearance between the sexes.


Using shell Size and Shape come Determine sex

The dimension differences in between most male and female turtlesmay not be evident until the turtles reach sexual maturity (and the diet can likewise play a duty in the size of a turtle). For masculine red-eared sliders, sex-related maturity is about the time they reach 4 customs in length (and at around two to five years old). Females room sexually mature as soon as they with 6to 7 inches in size (which might take 5 to seven years). Females will grow larger 보다 males in red-eared sliders and many other turtle species, but the dimension difference in between males and also females varies by species. Because that example, in sulcata tortoises, the females deserve to reach 100 pounds and the males can flourish to 200 pounds or more. In sea turtles, the male and females have the right to both prosper to the very same size. Come reliably use shell size as a factor in determining the sex of a turtle, the turtle must have actually reached that adult size.


The bottom the a turtle"s shell (called the plastron) is additionally used as an indicator for determining gender in turtles. Masculine turtles have actually a concave (curved in) plastron if females have actually a level one. This shapes allow male turtles to an ext easily mountain a female during mating, and also they offer females more room to hold eggs internally.


utilizing Claw size to Determine sex

Female turtles frequently have claws on your front feet that space short and also stubby. Males (and specifically red-eared sliders and also other aquatic turtles) have much longer claws on your front feet 보다 females. This is since males utilize their claws when they room attempting come woo females to breed. During mating, the males will additionally grab the female"s upper shells by utilizing their lengthy claws.


using Tails to Determine gender

The most common method to determine sex in a tortoise is to look in ~ the length of the tail. woman turtles have short and skinny tails if males sport long, thick tails, through their vent (cloaca) positioned closer come the finish of the tail when compared to a female. It is, that course, easiest to recognize the gender of a turtle when looking at its tail length if you have actually multiple tortoise of both sexes to compare.


using Markings and also Coloration to Determine sex

All red-eared sliders have predominantly eco-friendly bodies suffused through bright yellow streaking, which won't help distinguish males native females. Yet other shade indicators may. The plastron is yellow v uneven, dark markings that room paired while the tail, legs, and head are environment-friendly with thick yellow stripes. As red-eared sliders acquire older, numerous turn come a dark, practically black color and may obscure some or all of their yellow markings. This darker coloration is much more common in masculine red-eared sliders.


Ornate box turtles are one more kind of turtle the is sexually dimorphic. Mature masculine ornate box turtles have red eye while female eyes room brown or yellow. The males likewise have greenish-colored heads v red or orange leg scales and also females have actually brown heads through yellow foot scales.


If you doubt your pet is sick, call your vet immediately. Because that health-related questions, always consult her veterinarian, together they have examined your pet, understand the pet"s health and wellness history, and also can do the best recommendations for her pet.

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