I figured it out! Use left mouse button to set a target, then press spacebar to have pizza drop there. The dog will run to that area, stopping or pushing people in the way. He can be hit by cars, but I don't think they hurt him.
Thanks, at some point my dog ate his fill and stopped going anywhere :)
OMG that's great. It's probably a bug with the way Gdevelop handles instances.
I had a bug with the physics collisions..
