How can you tell the difference between a male and a female turtle?

Question

How can you tell the difference between a male and a female turtle?

Answer 1

  The tails are the best way for some. But like above me states its really the type that makes a diff. Post a photo of the belly and you will get an answer

Answer 2

it depends on what type of turtle/tortoise you have, like res turtles

males have thicker tails and females have longer and skinny tails

but its different with tortoises.  

Answer 3

the tail  

Answer 4

The only general rule is to look at the tail from underneath. If the vent is beyond the carapace (upper shell) when the tail is held straight back, you have a mature male. If the vent is under the carapace, you have either a female or an immature male..

Most of the people asking this have immature turtles and won't be able to tell for a few years.