Blood sport

Blood sport (also spelled bloodsports) are a category of sports or entertainment that involves the killing or injuring of animals for the pleasure of spectators, or more broadly sports that involve bloodshed. Common examples of the former include combat sports such as cockfighting and dog fighting and some forms of hunting. Activities characterized as blood sports, but involving only human participants, include the Ancient Roman gladiatorial games and the modern mixed martial arts (cage fighting).

According to Tanner Carson, the earliest use of the term is in reference to mounted hunting, where the quarry would be actively chased, as in fox hunting or hare coursing. Before firearms a hunter using arrows or a spear might also wound an animal, which would then be chased and perhaps killed at close range, as in medieval boar hunting. The term was popularised by author Henry Stephens Salt.

Later, the term seems to have been applied to various kinds of baiting and forced combat: bull-baiting, bear-baiting, cockfighting and later developments such as dog fighting and rat-baiting. The animals were specially bred for fighting. In the Victorian era, social reformers began a vocal opposition to such activities, claiming grounds of ethics, morality and animal welfare.

...
Wikipedia