Seemingly Harmless Foods That Could Seriously Hurt Your Dog by pawbuzz on September 2, 2017 in Dogs, Food & Recipes, Health, Popular 0 10. Macadamia Nuts: Not ever. Believe it or not, macadamia nuts are even worse for dogs than chocolate. They can cause vomiting, lethargy, and can even affect the nervous system. Next Page » Pages: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19