Join Date: Oct 2007
Location: Northern California
Trade for an identical toy. If disinterested, make the new ball "come alive", bounce it squeak it or just wave it around... when he drops the old one for it then do the same thing with the old one. Once that behavior is predictable you can start saying drop it (or a different word if you think drop has been tainted) just before he drops it. Progress to a toss so that he has to take his focus off of you momentarily and begin keeping the trade ball behind your back / out of sight and eventually out of the picture.
If the ball is too high of value right now for this exercise, get two identical rope or tug toys - capitalizing on his desire to interact rather than posses.
TILDEN: Male: Blk/Red LHGSD: DOB: 12/24/06 65lbs of Love
KEYSTONE: Male: Sable: DOB: 2/11/13 55lbs of Go!!!!!