Sanji leading the run/ride. We'll be traversing single or two-track, and then when he hears or sees something, he'll dart off the trail, run somewhat parallel at full speed (which he seems to just love). Sometimes I can see its a squirrel, but sometimes I think he smells or sees deer, because he's gone out of sight. I noticed it was where we saw deer previously. My guess is its a "flush the prey out of the bush" maneuver. But I'm not a hunter, nor very knowledgeable on Basenji behavior. I may not see him for a 30 sec. to a minute. Twice so far he was either in pursuit or couldn't relocate me, as he was gone several minutes. But he always comes back as fast as he left, though I have to whistle and call his name for him to re-locate me. Thinking maybe I should get a GPS collar, but he always seems eager to find me again.