Persin, a fungicidal toxin, makes avocados deadly. Small doses can cause vomiting and diarrhea, but high doses are lethal.
Due to amygdalin, apple seeds are poisonous but not the flesh. Toxic, they must be chewed and swallowed in huge amounts.
Garlic kills dogs because thiosulfate destroys red blood cells. Garlic toxicity requires a lot, yet certain breeds are sensitive.
Milk and dairy products improve calcium but might cause lactose intolerance in dogs. Dogs may suffer.
Macadamia nuts are very bad for dogs. The most poisonous, they cause vomiting, weakness, fever, and organ failure.
Small doses of mustard won't kill dogs, but high doses can. Mustard's moderate toxicity makes veterinarians recommend it for vomiting.
Candy and baked goods include xylitol, a sugar substitute. It rapidly releases insulin in dogs, producing comas in 15–20 minutes.
Chocolate includes theobromine, a dog-toxic stimulant. Theobromine content varies by chocolate. It mostly affects the intestines, heart, CNS, and kidneys.
Thiosulfate in onions can harm dogs. Size affects dog vulnerability.
Avoid cooked bones for your dog. These can easily splinter and cause fatal constipation or perforation in large quantities.
Dogs are particularly at risk from grapes and raisins. Small amounts can cause sudden kidney failure, vomiting, and diarrhea.