My golden retriever mix picks up fresh pecans out of the yard, crunches them open and eats as much of the nut as she can. She taught my other dog that pecans are yummy, but he never cracks them open for himself. She cracks them, gets what she can out and then he comes and cleans up what he can. If I shell them and toss them, they both eat them up like they're cat food treats.
Karen