Communication
I just had a funny experience with my mother's cat.
He was eating and slightly disturbed by some of the noises I was making.
So I looked back at him, blinked with both eyes, and then with only one, to tell him that it's ok to trust me, that I don't mean him harm.
Immediately, seemingly without a pause between my blink and his reaction, he jumped forward from his food and ran a meter towards me as if he wanted to come and meet me. It was very strange. My mother hadn't seen him do anything like this. Classic communication error, I just wonder what he thought I wanted to say with my blink.