I happily keep 3 eight year old Spur Thighed Iberas (one male & two females) & a friend who is very ill has asked me to take his under one year old Med tortoise that almost certainly is not an Ibera off his hands. I appreciate quarantine periods but is mixing types an absolute no no or does this only come into play when sexually mature or does it not really matter at all? I would like to help but could/should they live together? Expert opinions please.