Garlic is toxic for dogs
If ingested in large quantities or over a prolonged time frame, garlic can be toxic to dogs as it can damage their red blood cells. Concentrated forms of garlic, such as garlic powder, are worse for dogs. Typically, symptoms are not noticed until 2-5 days after consumption. If your dog experiences any of the following symptoms after eating any form of garlic, contact your veterinarian immediately.
Symptoms: dark orange or red urine, weakness, tiring easily, vomiting, diarrhea, drooling, pale gums