Can a minors shop at a pet store alone?

I'm almost 16, but I look very young. Often mistaken for being 12. I have 2 mice and I would like to buy them each a wheel. Mainly because one of them is very active and runs around constantly. And one is always sleeping and is a bit lazy. Which worries me. As mice can easily become overweight. Would the... show more I'm almost 16, but I look very young. Often mistaken for being 12. I have 2 mice and I would like to buy them each a wheel. Mainly because one of them is very active and runs around constantly. And one is always sleeping and is a bit lazy. Which worries me. As mice can easily become overweight.
Would the owners sell it to me?
Also, the current size for a wheel is 6inches? Right? Or do they need bigger? Both mice are boys.
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