Muscular dystrophies are a group of diseases in which proteins in the muscles do not function properly, either through inherited or spontaneous mutations. This, in turn, leads to muscle tissue ...
African wild dogs might use facial expressions to communicate with each other as they hunt in packs on the savanna. Arno Meintjes via Flickr under CC BY-NC-SA 2.0 DEED Puppy-dog eyes are irresistible.