My tortoises have recently been mating and its nearly hibernation time. Do I need to take them to a vet or stop them from hibernating until eggs are laid?
If it is recently, then it will be fine for them to hibernate. This would happen in the wild and it is only tortoises that have well developed or over calcified eggs, that are showing signs of wanting to nest that need veterinary intervention. Tortoises can store sperm too for several years, so this tortoise may well not become gravid until spring.
