Has anyone heard this really weird sound from their cat? With 2 of mine, when they're sitting by the window watching outside - whether or not there are birds around - usually I'll hear this really weird clicking/meowing/purring sound coming out of their mouth, and I can see they open their mouth wide to do it, but it's not like they're hissing and showing their teeth.
Any clue what this is?!?!
Any clue what this is?!?!