Excuse me...? Umm, I'd like to know how you know exactly where I'm getting my BREEDING stock from. Yes, I have some rats from the petstore, they're in my colony, they are not breeding, thank you for your concern. Believe it or not, but, yes, some people do breed these rats in an attempt to make them healthier, to weed out the ones with megacolon and other genetic issues.
Hence the reason why there are breeders out there attempting to eliminate the health issues of hairless rats. And, believe it or not, but hairless carrier females do not have the same problems hairless females do, and, shockingly, a hairless bred to a hairless carrier produces hairless babies...Hairless rats DO NOT make good mothers. They rarely lactate(if they do, it's not enough to support a litter more than 1 or 2 pups) and don't carry enough fat on their bodies to support themselves AND a litter.
I appreciate your concern. Now can we get back to the subject of what varieties people have in their colonies? Thanks.