guinea pig

A guinea pig, a guinea pig, a guinea pig, howled the student of heredity.

And they tried to get at Tom—but the guinea pig stood in the way.

This guinea pig's name was Jeff, and he and I became good friends.

Why has the guinea pig teeth that are shed before it is born?

"A guinea pig, like all the others including us," his wife said.

Do you believe there was a guinea pig killed in that cottage?

And when he came the Mayor asked him what he called his guinea pig.

He didn't add that he was also a subject, observer and guinea pig in one.

To be a guinea pig for some bug they wanted to learn how to kill cheaply and easily?

Here he has a guinea pig killin' a moose be bitin' it in th' ear.