Don't say the pet store lied, because it was most likely an honest mistake. I am ADAMENT to the customers that while I have made my "educated guess" we DO NOT guarantee sex on the animals, because it's too easy to make a mistake, especially with young animals.

Hamsters are very nearsighted, so remember this when you pick them up. Anything coming down on them from above can easily be mistaken for a predator.

I umm....Don't pick up hamters without thick leather gloves on....ever. I've been nailed by the little b***ers too many times!