Today we had our first loss in our mice coloney. 2 of the newest albino mice were super skinny when we got them one chunked up and the one that died didn't. How can you tell if the mouse is a lab mouse or a fancy one? We have one brown( male), agouti and now just 2 albino. The store I got the albino's fom only has albino and the others have mixed colors. They are all the same size and the girls are all pregnant other then the dead one which never was.