I recently started a small mouse colony, and the female was due any minute with her second litter... I noticed something hanging out from her behind (earlier today), and assumed it was the start of her birthing. Then I checked a while later, and the same thing was sticking out - plus she was breathing hard, and looked a bit lethargic. I separated her from the rest of the colony, into a small critter keeper with new bedding, but she is still looking pretty bad. I was going to help her out with tongs, if it is just a stuck pinky, but I'm afraid it might be a prolapse! Obviously if it is a prolapse, tugging on the thing won't make it better (and I'll probably just feed her off asap). Any ideas? I got a couple of pics, sorry they're so graphic.