hello my male tortoise has been in  hibernation  for just  over 9 weeks but  a little bit worried this year as he has lost a lot more weight then he did last   year   he lost 40g  he went in at 618 and now is 577 what you think 

Hi Sherri,

I make that a 7% weight loss over the nine weeks. Keep an eye on it and weigh weekly if possible. If it gets to 10%, (if his weight gets down to 556 grams) I'd wake him up. 9 Weeks is ok for a hibernation, might be a good precaution not to go over 12 weeks this year.

thank you for your help    i think i  give him a weight today   and see how he doing