Why was my hamster's leg blue and unresponsive? Was it hibernation?

Thanks for reaching out about Biskvit. Unfortunately, it does not appear that he is alive. During hibernation, they are still rousable but lethargic, still breathe. It is recommended that you visit a veterinarian to confirm death. sorry.

Oh no, I'm so sorry you don't know what's going on with Humphrey! Rigor mortis can take up to six hours to begin after death, and it can take up to 12 hours to affect the whole body. Check for signs of breathing, as if he's hibernating he will still be breathing. If he's not breathing, then he unfortunately has passed. The best way to know for sure is take him into the vet now. The vet can diagnose if Humphrey is hibernating or has passed.

Hamsters do hibernate, but typically it occurs when the temperature drops below 65F. Hamsters live in average 18 months to 2.5 years, so unfortunately it could be that Viker is getting old and reaching the end of his life. I'd recommend a visit with the vet as soon as possible for him. Best of luck.

Without seeing Bagel in person, I can't say if she's dead or not. Watch her very closely, if she is hibernating, she should take at least one or two breaths a minute. I'd also have her checked out by a vet.

Oh no, I'm so sorry you found Jjajngmyun this way! If her body is cold and her legs are still unfortunately I would be inclined to think that she has passed away. I would check to see if she is still breathing, but if she isn't, then she has passed away. You can always bring her into a vet to check for sure. I'm sorry :-(

Thanks for reaching out about Biscuit. By the description, he might have had a seizure or cardiac event. Dilated cardiomyopathy is relatively common in hamsters. A veterinary visit is recommended to assess and listen to the heart for any arrhythmia or murmur. Not all heart disease is detectable via a stethoscope, therefore radiographs might be recommended to visualize heart size. This is not curable but could be managed with medications if diagnosed. Good luck.

I can see that your hamster is hunched and her fur is raised. Her labored breathing is cause for concern. It can be caused by infections or masses, and requires veterinary attention right away. The blood you identified can be caused by bloody stool, or even a rectal prolapse, both of which are serious medical conditions. She should be seen by a vet as soon as possible, as she may require supportive care to be stabilized. I hope all is well!