Besides Elk and Condors, we also saw Ravens and Rock Squirrels. The Ravens weren’t that interesting, but the Rock Squirrels are everywhere – especially at the Rest Stops along the Trails. Every time we stopped for a snack, we would get approached by at least one Rock Squirrel. It is illegal to feed them, but they definitely associate people with food. One tried to climb in my pack when I wasn’t looking. A couple of the squirrels literally sat-up and begged for food along the South Kaibab trail.