Donkey the environment. They may compete with livestock and native animals for resources, spread weeds and diseases, foul or damage watering holes and cause erosion. Few species of ass exist in the wild. The African wild ass, "Equus africanus", has two subspecies, the Somali wild ass, "Equus africanus somaliensis", and the Nubian wild ass, "Equus africanus africanus", the principal ancestor of the domestic donkey. Both are critically endangered. Extinct species include the European ass, "Equus hydruntinus", which became extinct during the Neolithic, and the North African wild ass, "Equus africanus atlanticus", which became extinct in Roman times. There are five subspecies
Equus (magazine) owned by Active Interest Media and is based in Gaithersburg, Maryland. "EQUUS" provides information from veterinarians, equine researchers, riders, and trainers on understanding and influencing equine behavior, recognizing the warning signs of illness and disease, and solving riding and training problems. Equus (magazine) Equus is a monthly magazine for horse owners that was first published in November 1977. The intent of the magazine is succinctly stated by founding editor and publisher Ami Shinitzky's original working title: "The Horseman's Veterinary Journal". In the editorial in the first issue Shinitzky wrote, "EQUUS serves as a bridge between the veterinarian and the horse