What does it mean when your guinea pig's body vibrates when you are petting it?

It means that he is happy Answer My daughter's guinea pig vibrates when it hears a female's voice...when my husband talks to him, he doesn't vibrate, but when I talk or my daughter talks to him, he vibrates while we are speaking! We think it's because he's happy and feels comfortable around girls! It means they are purring, Not that they are angry!

My guinea pig doesn it everytime I take her out, she nuzzles me, purrs, and loves when I give her kisses! Its a good thing Answer My guinea pig does that and she loves her butt being rubbed Answer It means they are happy! One of my guineas is a real lover and will do it constantly while I pet her LOVE :-D.

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