Here is a cat fascinated by a glass of carbonated water. It fizzes. There are bubbles in it. Note the painstaking caution with which the cat explores this, to him, paranormal phenomenon.
I’d try it on my cats, but they’re not so cautious and they’d just knock the glass over and I’d have to clean it up.
I’ve seen something like this myself. Anything that makes a sound or moves must be alive, from a cat’s viewpoint. Sparkling water just refuses to play by the rules. 🙂
Pretty foolhardy to leave a glass of water on a rug with a cat around! 🙂
Oh, a cat would never knock it over!