Digitally Drawn Bay or Brown Horse Rolling on Back

A Digitally drawn and coloured Bay and black horse rolling around on it's back. His bulging belly in the air, and his black mane and tail on the ground. He is enjoying a dust bath or just having fun. The horse (Equus ferus caballus) is one of two extant subspecies of Equus ferus. It is an odd-toed ungulate mammal belonging to the taxonomic family Equidae. The horse has evolved over the past 45 to 55 million years from a small multi-toed creature into the large, single-toed animal of today. Humans began to domesticate horses around 4000 BC, and their domestication is believed to have been widespread by 3000 BC. Horses in the subspecies caballus are domesticated, although some domesticated populations live in the wild as feral horses. These feral populations are not true wild horses, as this term is used to describe horses that have never been domesticated, such as the endangered Przewalski's horse, a separate subspecies, and the only remaining true wild horse. There is an extensive, specialised vocabulary used to describe equine-related concepts, covering everything from anatomy to life stages, size, colours, markings, breeds, locomotion, and behaviour.