If you don't mind the possibility of the hamster waking you up by running on its wheel or doing other activities during the night you should be fine. On the other hand if you are a light sleeper and need sleep you might not want to do this. Yes though, it is probably fine to let your hamster sleep in the same room as you.
no they do not need light they need sleep.
Hamsters are nocturnal animals. Artificial light will confuse a hamsters sleeping patterns meaning that he is awake at the wrong times.
there is no specific time.
No, hamsters have better vision in the dark because they are nocturnal
toys a wheel food water safe place to hide and sleep! xxx
Yes
yes
hamster tumors are just the same as a humans. When you start to feel small or large bumps on a hamster you will know that its a sign and you should immediately take your hamster to the vet, and they will see what they can do, or if your hamster is in pain, they can put your hamster to sleep humanely.
First one!
your little black bear hamster is fine he may be just a little agitated you might just need to give your hamster a brake let it sleep a while so the answer is no nothing is really wrong medically
yes