Macadamia Nuts and Dogs: The Nut Nobody Can Explain
Merck states plainly that the mechanism of macadamia nut toxicity is not known. Dogs are the only species affected. Here is what is documented and what is not.
Toxic Foods Reference
Onion Powder and Dogs: The Exposure Nobody Sees Coming
Merck names powders and dry soup mixes as the most common route to Allium poisoning. Where onion hides on a label, and what to do if your dog ate it.
Is Garlic Bad for Dogs? The Allium Family Explained
Garlic is toxic to dogs. Merck rates it 3 to 5 times more toxic than onion. Why onion, garlic, leek and chive are one problem, and when to call.