>In the natural state would have to be with the shells. I can see no way a
>dog could get the meat out. So are these toxins in the shell? If animals
>know what makes them sick, why would dogs be eating something toxic to them?

My dog can chew its way through a high strength extra thick nylon leash in
under 2 two minutes (he doesn't like it when I tie him to a lamp post and
go in to a shop).  What makes you think he couldn't crack open a nut?

Kat.