Old thread, yeah, but a good one.  We have a cat in our household (a dog too, but its not allowed upstairs) and if she is in the house, she will inevitably show up and jump up on the bed where I have reclined, climb onto my chest and make herself comfortable, and purrs like mad while I recover from a good journey.  Now, this may not sound unusual to YOU...but this cat is as aloof a feline as you will ever find.  Most all the time she won't come near any of us voluntarily.

Go figure.  I have no explanation...however, she CLEARLY seems to sense something.  What  that something is - I have no idea.

N.B.