Filmed 7/12/14 in Tyrone, NM. I have video and stills of this mother lizard and several of her newborns. Look closely, this first photo has both mother and baby. She must have delivered over two dozen. When I first saw her I thought, what a fat horned toad (sorry, very old habit) then I noticed movement around her as several babies were in the process of scampering away. I had time to run home for a camera and still capture the birth of at least a dozen more. Truly amazing. They couldn’t have been much bigger than the tip of my little finger at birth and within minutes were all puffed up and ready to run.
Doesn't look like A. exsanguis to me (but I could be wrong) and A. flagellicaudus is now considered a synonym of A. sonorae.