At our house, we have the same dance, except instead of bones, it's toys. Two of our dogs, Zena and Maggie, love toys, especially the toys the OTHER dog has. So I hand out two plush toys at a time. Both immediately end up with one of the dogs, and the other one eyeing them longingly. A few minutes later, the other dog has both toys, with the other one pining for them. This goes on all day long.