The tallest of the four, exceeding 13.2 hands, Welsh Cobs are known for their stamina, courage, and good movement. They are popular for riding, driving, and even in dressage and eventing.

From references in early Welsh literature, it appears that the Welsh Cob had been established and was recognized as a breed by the 15th Century. They were the used as draft horse and family transport, because of their strength and endurance capabilities throughout the ensuing centuries up to the advent of motor cars and tractors.

From the inception of the Welsh Pony & Cob Society Stud Book in 1901, the description of the Welsh Cob has changed little, although the upper and lower height limits have varied, from a minimum of 14.2hh to a maximum of 15.2hh and by 1950 this had been refined to a minimum height of 13.2hh and no upper height limit.

More recently, as the demand for horses as draft animals and as transport declined, the Welsh Cob's aptitude as a family equine has been realized - quiet enough for the younger members of the family to ride, but equally capable of carrying an adult and being used for a variety of performance tasks.