Hear me out here, I'm serious. This isn't a joke. I'm contimplating taking my cat. He's healthy and friendly enough for it.
I'd put a torso harness on it because they slip out of colars.
I'd haul food for it, it eats far less than the dog even though they're the same size. The food weight wouldn't be much.
I'd keep it out of shelters (unless people wanted it to eat mice) and burry any waste.
I'd only take it on a three day hike, to test it out.
Advice?