My Siberian hamster bites after new cage. Is he stressed or hurt?

As long as Sandy is still eating and drinking normally I would not be too concerned. If she stops either of these behaviors then I would recommend taking her to the veterinarian to be evaluated. I think it is very likely that she is stressed because of her new cage/environment. Continue to try and interact with her as you normally do, offer her her favorite treats and toys to help her feel more comfortable. Also, if you got a new substrate (bedding) to go with the new cage this could explain why you are smelling her urine and feces more strongly. If Sandy stops eating, becomes lethargic, or starts having diarrhea then I would recommend taking her in to see your vet. Otherwise just keep an eye on her for now as she’s adjusting I hope this helps. Thanks for using Petco Pet Education Center, formerly Petcoach. Best of luck.

I think you need to give him more time to calm down. One day is not enough. If he is very stressed it is best to cover the cage for a few days and bother him as minimally as possible. This will give him time to acclimate. This linked article below may help you more. https://hamsters101.com/help-hamster-adjust-new-home/

Show this to your sister: Check him thoroughly for injuries, or other abnormalities. Watch him when he eats. If his eating style has changed, he may have a problem in his mouth or with his teeth Most of the time hamsters chew the cage because of boredom, attention-seeking behavior, managing teeth growth, and the simple fun of chewing. Does he have a hamster wheel or an exercise ball? If not, those can relieve boredom. Give him some apple or birch twigs, Willow works too,dog biscuits, carrots to gnaw on. A hard dog treat helps with keeping teeth healthy.  Spend more time with him. Let your hamster crawl around on top of you while you lie on the floor. Hamsters love to explore, and once he has developed a trust in you he will want to climb all over you. Let him sleep during the day. Hamsters are nocturnal, which means they sleep during the day and are awake and active at night. Waking him up during the day, may cause him irritation. Interrupting his natural sleep schedule could lead to further undesirable behavior.  Check the size of his cage. As a general rule of thumb hamsters need at least a cubic foot of space. If your cage is smaller than that, he will need a bigger cage. Change the furniture in his cage around a bit to make it more interesting for him to explore. A cardboard tube from a roll of paper towel or toilet paper makes an excellent chew toy for hamsters and he should like to use it to hide and play in it. All this may help avoid biting , whether it is cage biting or biting your fingers. This is likely not a medical problem, unless you find an injury or you find that he is not chewing or eating properly or you think he may be in pain. And, unfortunately, sometimes Hamsters can turn into little bite machines. So if your hamster has plenty to chew on as described above, and the cage biting does not stop, you should move him into a glass aquarium, so he cannot keep up chewing bars and ruining his teeth. Be patient, it will take time. Please let me know if you have any other questions or concerns and I would be more than happy to help you further. Please take the time to mark this question as helpful or not as it helps us to improve on the quality of our answers to other pet owners. Thank you kindly!

Thanks for using Petco Pet Education Center, formerly Petcoach! Hamsters can get aggressive, especially around their young. I recommend handling the young as little as possible to prevent Khaleesi from being aggressive towards you or from taking it out on her pups. While it is less likely at this age, hamsters can even canibalize their young when they are stressed. Hamsters can typically be weaned (start eating dry food, no longer needed milk from the mother) at about 3 weeks. I recommend separating them into different cages or homes to prevent the hamsters from reproducing. You should also separate Khaleesi from the male hamster if you wish to prevent further breeding. Once the pups are gone, Khaleesi should resume her normal behavior towards you. I hope this helps!

It is possible that placing your hamster on your bed is a stressful experience for her which is why she is chewing. If you have other pets that get on the bed their scent could be on the blanket making her feel territorial or stressed out. Placing her on a freshly washed blanket and offering a few favorite treats may help her relax some. If the behavior continues or you see other signs of illness or behavioral changes then I suggest you have her examined by your vet to rule out health issues (like a dental issue). Hope this helps. Best wishes.

I would make sure bubbles has a large enclosures with plenty of toys to play with. Sometimes hamsters can have a lot of built up energy due to limited space. If he is eating,drinking and defecating normally I would not be concerned. However if he continues to have odd behavior or starts acting ill I would recommend taking him to a vet for an exam

Thank you for using Petco Pet Education Center, formerly Petcoach! Hamsters are pretty aggressive naturally, as they are commonly a nocturnal prey species. They also make burrows and nests, so it may be why Eggnog is destroying his toys. You may have to move very slowly with Eggnog, offering treats through the cage and even just approaching slowly and standing near his cage to start. I hope this helps!