Trixie is a enthusiastic hiker, but hiking the desert was hard on her paws. Everything is prickery - barbed burrs, cactus spikes, thorns everywhere. I saw one smart man whose dog was wearing booties. I wish I'd thought of that for Trixie. It would not have prevented her from colliding with a prickly pear and getting a leg full of two inch needles, but it would have protected her paws from the barbed burs, which bothered her much more than the prickly pear encounter.