which sports are related to these animals?
Dressage, eventing and show jumping.
Horse
Many sports, such as dressage, eventing and show jumping, have origins in military training, which were focused on control and balance of both horse and rider. Other sports, such as rodeo, developed from practical skills such as those needed on working ranches and stations. 
who was yasser arafat? Palestinian political leader did he have any health issues? Yes, influenza followed by hemorrhagic cerebrovascular accident. what are the symptoms of the first decease? Mixture of symptoms of common cold and pneumonia. which alternative medicines are used for treating the first one mentioned in symptoms?? There is insufficient scientific evidence to support the use of most. which methods are used for diagnosing the second? Combination of physical signs and a chest X-ray. is there any vaccine for it? Yes, Influenza vaccines. what are its side effects? Soreness, redness, runny nose, etc. for which species apart from humans has the vaccine been developed ? Horses
wiki:7700953
Horse [SEP] Sport
Historically, equestrians honed their skills through games and races. Equestrian sports provided entertainment for crowds and honed the excellent horsemanship that was needed in battle. Many sports, such as dressage, eventing and show jumping, have origins in military training, which were focused on control and balance of both horse and rider. Other sports, such as rodeo, developed from practical skills such as those needed on working ranches and stations. Sport hunting from horseback evolved from earlier practical hunting techniques. Horse racing of all types evolved from impromptu competitions between riders or drivers. All forms of competition, requiring demanding and specialized skills from both horse and rider, resulted in the systematic development of specialized breeds and equipment for each sport.