I'm starting a thread to see what people's conclusions, thoughts and concerns are on hibernating captive tortoises. I live in Alhambra, California and as you all know it is warm enough here even in the winter time. I adopted Fernando from Walter a day before Easter so he's pretty new to me and this hibernation thing is also new since Dale, Ruby and Eddie don't hibernate. I've heard where a lot of you hibernate your tortoises, but I'm wondering if it is because it's for their best interest or if it's easier just to let them hibernate. Fernando is a Desert Tortoise and in the desert it gets very cold and that's his survival mechanism, but when we can provide heat and a warm enclosure for them wouldn't this be adequate? My concern is that I've heard that a lot of tortoises can come out of hibernation with a respiratory infection and I should think that the older they get the more dangerous this could be for them. Fernando is around 30 to 40 years of age (per Danny) and I know that he had a URI last year (per Walter). The only thing that I don't know is whether or not he hibernated last year because I didn't ask Walter that. Please explain the pros and cons of this so I can understand and learn from your knowledge.