What about startling him to get him to stop when he's ready or in progress, but not snatching him up immediately (because then the chasing begins)? Startle him, he's scurries away, call him with "come" or whatever you use by offering a "good" treat, then take him outside, and if he potties, offer the "holy grail" treat. That way, you could be training the "come" command at the same time.
That chasing thing never works. Just an idea that I'd try. |