I'm sure your hamster drinks water, you just don't see. Dwarf hamsters are quite small, so they don't need to drink that much. But if she really isn't drinking yes, you need to take him/her to a vet. It will cost about 30 dollars
You should get a dwarf russian hamster. I have one and I love it. My hamster is so friendly. It doesnt bite but when it is scared it might nibble on your finger. My hamster is so so calm and it is family friendly.
it is okay for any hamster to drink out of a hamster bottle as long as you clean the bottle.(you should clean it everyday)
it doesnt hate you it is how you treat it
no
Hamster bottles or they'll drown
yes
No, you should never under any circumstances, ever put a dwarf hamster with a teddy bear hamster.
Carefresh
No, you should separate them.
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no
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