For a while, but you have to be very attentive and watch for signs that one or the other isn't doing well. You won't see overt signs of bullying, but one or more of them may start hiding in a corner, not eating much, and not growing as fast as the others. There's no time frame. You just have to be on your toes and be watchful.
Oh, and "Welcome to the forum!!"
Thanks Yvonne there may be many questions in the futureFor a while, but you have to be very attentive and watch for signs that one or the other isn't doing well. You won't see overt signs of bullying, but one or more of them may start hiding in a corner, not eating much, and not growing as fast as the others. There's no time frame. You just have to be on your toes and be watchful.
Oh, and "Welcome to the forum!!"
When can I tell the sexes of them. The guy I bought them off tells me he has loads of Greeks in his garden all different ages and sizes , how can this be good then ? I'm setting a large outside enclosure this year , this has got to be good for them, and if I wanted to get any older ones they must be kept separate , even if they are female ?Groups usually do well together. I think you might start to see issues at around 2 years old when the males start to mature. If there is only one male, or no males, you might be fine indefinitely.
Its all a gamble with multiple tortoises together.
Thanks TomIn a large outdoor natural-ish garden setting, large groups of multiple males and lots of females will sometimes work. There is enough stimulation outside, so many tortoises moving around and so many sight barriers, territories and places to get away from each other that it can often work just fine. Totally different story in a plain indoor small rectangular box.
Even in those group outdoor situations problem animals frequently pop up and have to be isolated.
Any new tortoises need to be quarantined for a period of several months at least to make sure they are healthy and vet check them. Females are more likely to get along, especially in Greeks, but even females will sometimes be a little scrappy with each other.