My Johnny likes a good nature walk, too. We'll be going to the Smokies for a weekend, so I hope he'll do well on a mountain trail.
I have four indoor cats, and my mom has a bunch. He's done really well with them, he was listed as "cats maybe", and it only took a couple of corrections from me and nose swats from the cats to get him in line . He will tell the cats off if they try to invade his personal space, but will let them eat from his bowl. However, he will go for outdoors cats, he still hasn't learned they aren't prey.