It's tough to do most types of SAR with a dog that does not like to play. They need to have a very special reward to make it worth their while.
All of my live find dogs use toys. My new boy, who will be hopefully doing HRD was started with food, but quickly transitioned to a toy. (Which was a surprise to me because he is not toy driven)
I have seen toys that have pouches that food can be hidden in. (Ow bad grammar). You can start the dog with food given from the toy, then once comfortable, the victim can "tease" with the good toy by dragging it around before letting him get it, then possibly he can tradition totally off it.
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