Is there any easy way to tell gender of a Russian Tortoise?

The physical characteristics that differentiate a male Russian tortoise from a female aren't usually apparent until the tortoise's shell is around 5 inches long. Before that time, they all look like females. Here's a page that illustrates the difference between the sexes:

http://russiantortoise.org/male_female.htm

Before adding another tortoise, there are some things to consider. There's a chance that your tortoise will become territorial and not accept a "roommate." Tortoises of the same sex will sometimes fight for dominance. This occurs more frequently with two males, although females can exhibit the same behavior. Keeping a male and female together could also present problems, since he might continually harass her with mating attempts. Male Russians often become very aggressive during courtship, driving a female into an area or position by biting her head, legs, and tail. This can be very stressful for the female and may eventually affect her health.

I have two Russian tortoises, a male and a female, who are housed together and get along fine. However, a friend of mine got a female to keep his male company and had problems with him constantly going after her. So you never know for sure if a particular combination is going to work. If you do decide to get a second tortoise, make sure the enclosure has plenty of room and there are hide areas for them to go into if they want to get away from each other. Be prepared to separate them and provide each with its own enclosure if they don't get along. Russian tortoises are pretty solitary in the wild and usually do fine alone in captivity.

Finally, it's recommended that any new tortoise be kept separate from the other for at least 3 months, ideally 6 months, to make sure it's healthy without any communicable diseases. During this time, the new addition should be checked over by a vet, including a fecal exam to ensure it's free of parasites.

Russian Tortoise Gender

The tail of a male is hooked and males are generally smaller. if it is a male tortoise I would not get just one female as he will bully her. It's a preferred practice to have 2 females for 1 male. http://www.tortoiseforum.org/ is a great site!

Hi its a good idea to have 2 females to one male http://pethomes2u.com/tortoise-tables

Click on the link below for more info on Sexing Your Tortoise.