If you are your dog’s best friend, then you certainly understand the importance of taking care of their health. This means you need to be vigilant at all times, especially when it comes down to what your dog is eating or what it is playing with. It’s important to understand what your dog is allowed to eat, and you need to be doubly sure that you are not giving things to that could be potentially dangerous for your dog – 1. Macadamia Nuts Giving feed to your dog that contains macadamia nuts? Then stop right then and there! You probably weren’t aware of it, but macadamia nuts cause an allergic reaction in dogs. What’s even worse is that it is even more toxic (for the dog’s gut) than chocolate. Your dog might like to munch on them, but macadamia nuts can make a canine vomit, cause lethargy, and even cause nervous system problems in dogs.