Hello. I got 2 "supposed" to be Russian tortoise in October at petco. They are doing well. But since I got hem. One triple in size and the other has not grown at all. When I got them they were both the same size. Any ideas????
One, they all grow at their own pace. Two, the larger one could be a female and the smaller a male. They look very nice btw
Check out Toms answer on this thread if he doesn't answer you here. http://www.tortoiseforum.org/thread-66452.html
Separate them. Russians should not be kept in pairs. The smaller one is most certainly stressed and wants to leave the territory of the larger one. Once he's comfortable and out from under the reign of his tormentor, his growth will likely resume.
Do you have a scale. It would be a good idea to get regular weights.