Only human beings are not the only creatures who suffer hair loss. Animals are also included in the list of that group who have fur, feathers or spines loss problem. Animals that lose their fur, feathers or spines look very strange and terrifying. Fur or feathers loss in animals and birds is mainly because of old age or due to disease. The scientific name of hair loss from head or other body parts is alopecia. Take a look on the following images of hairless animals.