More than just instinct, but they carry things out to a logical
conclusion.

I was going to bed the other night and Ruprecht followed me like most
nights...and he's on the bed before I lay down.

This night, I changed my mind I wanted to check my email.
I started moving away from the bed, and Ruprecht started to climb down.
I paused...he paused...(he's still on the bed)...looking to see what
I'm goin do. we're kind of eyeing each other...

Finally I say..."oh, go on and get a snack before we crash"...he
trotted off to the kitchen. Few mins later we're both back in the
bedroom all tucked in.

I thought it was cute. He was willing to goto bed, but there's always
room for one more snack. I told him, you ain't hungry!

This is proof that cats plan ahead.