Blood sport in the context of Rattus norvegicus domestica

Cockfighting is a blood sport involving domesticated roosters as the combatants. The first documented use of the word gamecock, denoting use of the cock as to a "game", a sport, pastime or entertainment, was recorded in 1634, after the term "cock of the game" used by George Wilson, in the earliest known book on the sport of cockfighting in The Commendation of Cocks and Cock Fighting in 1607. But it was during Ferdinand Magellan's voyage of discovery of the Philippines in 1521 when modern cockfighting was first witnessed and documented for Westerners by the Italian Antonio Pigafetta, Magellan's chronicler, in the Kingdom of Taytay.

The gamecocks (not to be confused with game birds) are specially bred and conditioned for increased stamina and strength. Male and female chickens of such a breed are referred to as gamefowl. Cocks are also bred to be aggressive towards other males of their species. Wagers are often made on the outcome of the match, held in a ring called a cockpit.

Spanish-style bullfighting is a type of bullfighting that is practiced in several Spanish-speaking countries: Spain, Mexico, Ecuador, Venezuela, Peru, as well as in parts of southern France and Portugal. In Colombia it has been outlawed but is being phased out with a full ban coming in effect in 2027. This style of bullfighting involves a physical contest with humans (and other animals) attempting to publicly subdue, immobilize, or kill a bull. The most common bull used is the Spanish Fighting Bull (Toro Bravo), a type of cattle native to the Iberian Peninsula. This style of bullfighting is seen to be both a sport and performance art. The red colour of the cape is a matter of tradition – bulls are color blind. They attack moving objects; the brightly-colored cape is used to mask blood stains.

In a traditional corrida, three toreros (or matadores) each fight against two out of a total of six fighting bulls to death, each bull being at least four years old and weighing up to about 600 kg (1,300 lb) with a minimum weight limit of 460 kg (1,010 lb). Bullfighting season in Spain runs from March to October. The practice is also known as a corrida de toros ("bull-running"), toreo or tauromaquia (English: tauromachy). Since the late 1980s, bullfighting in Spain has declined in popularity due to animal welfare concerns, its association with blood sport, and its links to nationalism.

Speciesism (/ˈspiːʃiːˌzɪzəm, -siːˌzɪz-/) is a term used in philosophy regarding the treatment of individuals of different species. The term has several different definitions. Some specifically define speciesism as discrimination or unjustified treatment based on an individual's species membership, while others define it as differential treatment without regard to whether the treatment is justified or not. Richard D. Ryder, who coined the term, defined it as "a prejudice or attitude of bias in favour of the interests of members of one's own species and against those of members of other species". Speciesism results in the belief that humans have the right to use non-human animals in exploitative ways which is pervasive in the modern society. Studies from 2015 and 2019 suggest that people who support animal exploitation also tend to have intersectional bias that encapsulates and endorses racist, sexist, and other prejudicial views, which furthers the beliefs in human supremacy and group dominance to justify systems of inequality and oppression.

As a term, speciesism first appeared during a protest against animal experimentation in 1970. Philosophers and animal rights advocates state that speciesism plays a role in the animal–industrial complex, including in the practice of factory farming, animal slaughter, blood sports (such as bullfighting, cockfighting and rodeos), the taking of animals' fur and skin, and experimentation on animals, as well as the refusal to help animals suffering in the wild due to natural processes, and the categorization of certain animals as alien, non-naturalized, feral and invasive giving then the justification to their killing or culling based on these classifications.

A mastiff is a large and powerful type of dog. Mastiffs are among the largest dogs, and typically have a short coat, a long low-set tail and large feet; the skull is large and bulky, the muzzle broad and short (brachycephalic) and the ears drooping and pendant-shaped. European and Asian records dating back 3,000 years show dogs of the mastiff type. Mastiffs have historically been guard dogs, protecting homes and property, although throughout history they have been used as hunting dogs, war dogs and for blood sports, such as dog fighting, bull-baiting, bear-baiting, and even lion-baiting.

Fox tossing (German: Fuchsprellen) was a competitive blood sport popular in parts of Europe in the 17th and 18th centuries. It involved throwing live foxes and other animals high into the air. It was practiced by members of the aristocracy in an enclosed patch of ground or in a courtyard, using slings with a person on each end to catapult the animal upwards. It was particularly popular for mixed couples, even though it was hazardous for the people launching the animals as the terrified animals would often turn on the participants. The result was often fatal for the tossed animals.

The fancy rat (Rattus norvegicus domestica) is the domesticated form of Rattus norvegicus, the brown rat, and the most common species of rat kept as a pet. The name fancy rat derives from the use of the adjective fancy for a hobby, also seen in "animal fancy", a hobby involving the appreciation, promotion, or breeding of pet or domestic animals. The offspring of wild-caught specimens, having become docile after having been bred for many generations, fall under the fancy type.

Fancy rats were originally targets for blood sport in 18th- and 19th-century Europe. Later bred as pets, they now come in a wide variety of coat colors and patterns, and are bred and raised by several rat enthusiast groups around the world. They are sold in pet stores and by breeders. Fancy rats are generally quite affordable, even compared to other small pets; this is one of their biggest draws. Additionally, they are quite independent, affectionate, loyal and easily trained. They are considered more intelligent than other domesticated rodents. Healthy fancy rats typically live 2 to 3 years, but are capable of living a year or so longer.

Dog fighting is a type of blood sport that turns game and fighting dogs against each other in a physical fight, often to the death, for the purposes of gambling or entertainment to the spectators. In rural areas, fights are often staged in barns or outdoor pits; in urban areas, fights are often staged in garages, basements, warehouses, alleyways, abandoned buildings, neighborhood playgrounds, or in the streets. Dog fights usually last until one dog is declared a winner, which occurs when one dog fails to scratch, dies, or jumps out of the pit. Sometimes dog fights end without declaring a winner; for instance, the dog's owner may call off the fight.

Dog fighting generates revenue from stud fees, admission fees, and gambling. Most countries have banned dog fighting, but it is still legal in some countries, such as Venezuela, Bangladesh, Japan and Albania. The sport is also popular in Russia.