I feed my mice a lab rodent diet but I should have made it clear these tails came from frozen rodents . I've heard shrews are difficult to raise. They are insectivores and they need to eat their weight in food every three hours or so. A friend of mine used to have pygmy mice, those babies were tineeeee, but the monkey pox scare has pretty much made them impossible to get. I may have to check on it now though. I am sure someone still has some hidden away.