Macadamia Nuts are toxic to dogs but no known deaths have occurred. They will experience nerve and muscle problems til they are out of there system. I speak from experience, I had 2 dogs eat a can of them and then have to have charcoal down their throats. I came to find out later it was too late for the charcoal because they ate them th night before and by the next morning they cleared their stomach. Briona and Emmett were affected, Addie either didn't get any or not enough to affect her. Emmett couldn't move his hind legs and I at first thought he had torn a tendon again. I rushed him to the vet and they thought he might of too so I brought him back home to wait to see the ortho vet and then I noticed Briona was acting all weird too and I remembered the macademias. So I then had to get Emmett in to the truck and Bri and back to the emergency vet (this was a Sunday morning of course) those poor dogs had so much charcoal tubed down their throats, especially Emmett! And the both tolerated it and were well behaved. Then the came home to let it wear off, Emmett was pretty twitchy for some time.
So no macadamias!