Why Do Some Cats Trill And Some Don't?

[Alice_The_Goon]

@LurkMeister

One of my cats chirps. I can’t think of any other way to describe it; a sharp, short sound that sounds a bit like a squirrel chittering, but lower-pitched. He sometimes makes it in his sleep, but mostly when he’s looking out the window. His brother doesn’t do it, so I don’t know where it picked it up. He made it before and after he was fixed (he’s almost nine months old now), and none of the other cats I’ve had ever made anything that sounds like it.

I’ve had cats do this as they’re watching their prey, like a bird. The mouth moves but the sound is very quiet and chirp-like. It’s not the same as trilling.