do frozen/thawed

do frozen/thawed look smaller than they are just because they aren't all fluffy? i don't have a scale yet but I was sold mice as 'adults' but they look really small.

Some of them also are compressed a little bit from the way they are frozen, most likely the company trying to pack as many as possible together. I find mine usually plump up after defrosting.

I've had "adult mice" sold to me at 20g and at 50g.. so yeah you're probably not imagining anything about size differences.