Cats often purr when content and relaxed, but they may also purr when in pain or distress.
Meowing is how cats communicate with humans. Different meows can convey hunger, affection, or a desire for attention.
Hissing is a sign of fear or aggression in cats, often used to ward off threats.
Some cats make chirping sounds when observing birds or prey animals, a behavior often seen in outdoor cats.
Growling is a clear sign of aggression or irritation in cats and may precede other aggressive behaviors.
Cats may chatter their teeth when watching birds or other small prey, possibly expressing excitement or frustration.
Yowling is often associated with mating behaviors in unspayed cats but can also indicate distress or illness.