We got our first hamster (female, about 8 weeks old) 4 days ago. She appears not to have drunk a drop of water since we brought her home. I have checked that her water bottle works (by shaking it and tapping the end and water definitely comes out), but just in case I bought another one and attached that too. The pet shop owner said not to worry, they don't drink much and as long as they have access to water, they'll drink it if they want to. But I am worried. I have given her small pieces of cucumber and carrot in the hope she gets some mositure out that that. I have marked the water bottles and she is definitely not drinking. Is this common? What should I do?