The British Cavy Council governs cavy clubs in the United Kingdom.
From the en.wikipedia.org
Cavy Clubs and Associations dedicated to the showing and breeding of guinea pigs have been established worldwide.
From the en.wikipedia.org
More examples
Short-tailed rough-haired South American rodent
Caviinae is a subfamily uniting all living members of the family Caviidae with the exception of the maras, capybaras and Kerodon. The subfamily traditionally contained the guinea pig-like forms along with the cursorially (running) adapted Kerodon. ...
(Cavies) The Cavy family (Caviidae) is a family of rodents native to South America, and including the domestic guinea pig, wild cavies, and the capybara, among other animals. They are found across the continent, in open areas from moist savanna to thorn forests or scrub desert. ...
A guinea pig
A herd of horses, another term (from the 1940s and 1950s) for remuda