Foods that are poisonous to dogs

Avocados - Avocados are dangerous, partly due to a fungicidal toxin called persin.

Apples - The flesh of apples is not toxic, but the seeds can be poisonous due to a compound called amygdalin.

Garlic - Garlic can be fatal to dogs due to a compound called thiosulfate that damages red blood cells.

Milk and other dairy products - Even though milk and dairy products have calcium-boosting properties, they can be bad for dogs and contribute to levels of lactose intolerance.

Macadamia nuts - In general, nuts are not good for dogs, especially macadamia nuts.

Mustard - Mustard won't be lethal to dogs in small doses, however, it can be toxic in higher amounts.

Artificial sweetener (xylitol) - It’s extremely toxic to dogs, causing rapid insulin release that can put them in a coma within 15 to 20 minutes.

Chocolate - Chocolate contains a stimulant called theobromine, which is poisonous to dogs.

Onions - Onions can be poisonous to dogs due to the thiosulfate they contain.

Cooked bones - Giving your dog a raw, uncooked bone to chew on is great, but avoid cooked bones.

Grapes and raisins - Grapes and raisins rank among the most serious food threats for dogs.

Caffeine - A small amount of caffeine won't do any harm, but if your dog swallows a handful of coffee beans or tea bags then it can pose serious danger.

Peaches - The peach flesh itself is fine for dogs to eat, but the pits of peaches contain amygdalin, the same substance found in apple seeds, which is toxic for your pup.

Spinach - Spinach contains a high amount of oxalic acid, a substance known to interfere with dogs’ ability to absorb calcium.

Tobacco - Tobacco isn’t technically a food, but it's something ingested by humans, which can be extremely lethal for dogs if they manage to chew on cigarettes.

Potatoes - Potatoes are toxic for dogs due to them containing solanine. It blocks a chemical called acetylcholine, which dogs need to transmit nerve impulses.

Alcohol - Small amounts won't necessarily kill most dogs, but severe poisoning and other health issues can occur.