Every few months, a Progress robotic spacecraft (it's basically an automatic Soyuz without the living space or re-entry module) visits the ISS, with supplies.
It occurs to me that it would be hilarious if the occupants opened it up... to find an enraged, floating cat. But then I realised my mistake.
An owl would be far better.
I expect NASA and Roscosmos to give me 10% of the revenue from the hit reality TV show which results from this.