Guinea pig
Other languages

Guinea pigs are called quwi or jaca in Quechua and cuy or cuyo (plural cuyes, cuyos) in the Spanish of Ecuador, Peru, and Bolivia.

The animal's name alludes to pigs in many European languages. The German word for them is Meerschweinchen, literally "little sea pig", in Polish they are called świnka morska, in Hungarian as tengerimalac, and in Russian: морская свинка, romanized: morskaya svinka. The German word derives from the Middle High German name Merswin. This word originally meant " dolphin " and was used because of the animals' grunting sounds (which were thought to be similar).

Many other, possibly less scientifically based, explanations of the German name exist. For example, sailing ships stopping to reprovision in the New World would pick up guinea pig stores, providing an easily transportable source of fresh meat. The French term is cochon d'Inde (Indian pig), or cobaye; the Dutch called it Guinees biggetje (Guinean piglet), or cavia (in some Dutch dialects it is called Spaanse rat); and in Portuguese, the guinea pig is variously referred to as cobaia, from the Tupi word via its Latinization, or as porquinho da Índia (little Indian pig). This association with pigs is not universal among European terms; for example, the common word in Spanish is conejillo de Indias (little rabbit of the Indies).

The Chinese refer to the animal as 豚鼠 (túnshǔ, "pig mouse"), and sometimes as 荷蘭豬 (hélánzhū, 'Netherlands pig') or 天竺鼠 (tiānzhúshǔ, "Indian mouse"). The Japanese word for guinea pig is モルモット (morumotto), which derives from the name of another mountain-dwelling rodent, the marmot. This word is how the guinea pigs were called by Dutch traders, who first brought them to Nagasaki in 1843. The other, and less common, Japanese word for guinea pig, using kanji, is 天竺鼠 (てんじくねずみ or tenjiku-nezumi), which translates as "India rat".
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