What does it mean if your cat makes a chattering, muttering sound?

What does it mean if your cat makes a chattering, muttering sound?

When your cat sees a little bird, he often waves his tail very loudly and makes a whimpering sound. Some cats also have chattering teeth during roaring. Your cat’s lip will be raised. It is the excitement when they see a prey, this can of course also be an insect or a butterfly. It is a misconception that cats would groan in frustration. Lions and lynxes also moan when they see prey.