| − | Guinea pigs are used for the purposes of testing drugs and cosmetics before trials on [[human]], along with [[rat]]s, mice and other small rodents. Because of this, the term ''to be guinea pigs'' is sometimes used to describe someone or a group of people who are testing or trialling something for the first time, for example a class of students may say "we we're ''guinea pigs'' for the new course structure". | + | Guinea pigs are used for the purposes of testing drugs and cosmetics before trials on [[human]]s, along with [[rat]]s, mice and other small rodents. Because of this, the term ''to be guinea pigs'' is sometimes used to describe someone or a group of people who are testing or trialling something for the first time, for example a class of students may say "we we're ''guinea pigs'' for the new course structure". |