Guinea pigs are vocal animals. They love to express themselves and
communicate with each other through a range of noises. Some may
sound alike but if you pay enough attention to those noises, you
will eventually be able to hear the difference and better
understand what your guinea pig is saying through its
vocalisations.
Squeaking (Wheeking)
This is a sound they emit when they are hungry and want to be fed.
They are seeking for attention. Guinea pigs are intelligent
creatures and can identify the sound of plastic bags being opened
or when the refrigerator doors are opened and closed – they assume
that food is on the way.
Rumbling
Similar to purring, the sound of rumbling is deep and intense, with
a vibrating effect. You can hear it when a male guinea pig is
romancing a female guinea pig. Rumbling indicates excitement, more
specifically sexual excitement, and is most often heard from male
guinea pigs.
Teeth Chattering
It is best to leave your guinea pig alone if you hear or see its
teeth chattering. Not to be confused with the chattering sound,
this is a warning signal to other guinea pigs to back off or stay
away. This happens when they are upset, agitated or frightened.
This sound can also be associated with the display of dominance
when two males chatter at each other.
Purring
Purring is an indication of happiness, contentment and pleasure. It
is usually accompanied by a relaxed and comfortable position. Just
like cats, guinea pigs purr when you pet them. Do note that a purr
can also mean something else. If it sounds like a “durr” (short
purr) together with a “statue-like” posture, it may be a sign of
fear or uncertainty.
Chirping
The reason behind chirping is unknown and it is quite rare to hear
guinea pigs chirp. It sounds similar to a bird chirping and
typically happens when the guinea pig is in a trance. Once the
“song” ends, he or she may simply resume nibbling on a piece of
food as if nothing has happened.
Shrieking
A shriek will sound like a piercing, high-pitched squeak – most
likely an indication that they are in pain or fear. If you do hear
something like this, hurry over and check that your guinea pigs are
fine and unharmed.