Some of the larger mice do get to looking pretty twisted, fur sticking up like they just fell outta bed, folded over, molded into strange forms frozen around each other - sometimes some'll have almost pooped but not quite - but I've never seen anything that appeared to be pee. The fuzzies and hoppers on the other hand due if nothing else to the fact that they are still small and compact and more importantly freeze quicker seem to retain their "natural lively shapes". Does the store kill/freeze these themselves - if so how?