Rub there back firmly, If she stands still with her tail up she is, They come into heat generally every 4 days so keep at it.
I have a hamster with red eyes as well I have not seen your hamster and i don't know how it reacts but it if it reacts as if it were blind then it may be.
None...
i don't know if i get your question but i think that is urine.
Only a vet that has evaluated and weighed it can know for sure, otherwise your hamster can get an overdose.
I would think it would depend on the hamster... although my friend's hamster has no particular aversion to cabbage; find a hamster and offer it some coleslaw.
anytime baby
It depends on the hamster, so i dont know.
What is a hamster that has no legs called? A furball.
you get it
Ask yourself one key question: "Do I want a hamster?" If the answer is yes, then any hamster will do.
a hamster doesnt know how to swim this is all i know soz
If it is a female, she could be going into season.
you will have to ask the person who sold you the hamster that is the only way.
If he bites you.
If you see the hamster looking and nibbling for a place to get out, then they want to get out. I found this answer because my own hamster escaped. 
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.
Get a bear hamster DO NOT get a dwarf hamster they are evil and if you see them in the store and they are not evil yet they will become evil!I LOVE MY BEAR HAMSTER!!!