There is no cat 'language'. Painful as it is for us to admit, they don't need one.
We've had some really beautiful weather here recently. Sunny and honest to goodness warm! I've been able to open the windows and the back French doors to air out the stale winter house. Bella loves to take it all in from her favorite perch on the back of the couch in the den.
It's actually a cute red couch, but I have to drape a pillow case over the back to prevent the thick coating of cat hair from sticking!
Anyway, Bella was loving the fresh breeze and the sounds from the birds at "her" bird feeder outside the window.
I began to notice that instead of her usual napping, relaxed sprawl she was up and alert.
"Whatcha looking at Bell-Bell?" I asked.
As I approached the window I was taken by surprise to see Brittany, our neighbor's outdoor cat sitting outside and less than a foot from Bella's spot.
I thought Bella would be freaking out but instead they just stared at each other, meowing a little bit. Then Bella snuggled up into a ball, the "kitty meat loaf" as we refer to it, and began to purr! Crazy! Poor thing is probably lonely. They sat "together" for about a half hour before Brittany took off.
Hopefully she'll come by to visit again.