5 Weird Human Foods That Are Toxic To Dogs

  Estimated Read Time: 4 minutes Summary: In this blog, we learn all about what foods dogs can’t eat. We’ll learn about five unusual foods in our kitchens that are toxic, poisonous and dangerous for dogs to consume…   It’s hard to avoid giving your dog your food, especially when they give you those cute, infamous […]

4 min read·Updated: Mar 06, 2025
5 Weird Human Foods That Are Toxic To Dogs

 

Estimated Read Time4 minutes

Summary: In this blog, we learn all about what foods dogs can’t eat. We’ll learn about five unusual foods in our kitchens that are toxic, poisonous and dangerous for dogs to consume…

 

It’s hard to avoid giving your dog your food, especially when they give you those cute, infamous puppy eyes! But, some snacks that we humans can enjoy without a worry can be very toxic and poisonous to dogs, so it’s worth knowing the major ones to avoid letting near your doggo!

So, what food can dogs not eat? If you think your dog has had any one of these foods, we recommend contacting your vet.

Chocolate

Chocolate, in the same way that caffeine does, has a stimulating ingredient called Theobromine, which is toxic for dogs to consume. It’s found in all chocolate: milk, white and dark chocolate, with the highest dosage being in dark.

After digesting, the effects of chocolate can show from 4 to 24 hours in your dog, and can have detrimental effects on the nervous system, kidneys, heart and gut. The symptoms to look for include diarrhea, vomiting, restlessness, abnormal heart rate, frequent urination and seizures.

If you notice your dog showing any of these symptoms after they have eaten chocolate, you need to take action immediately.

Grapes, Sultanas & Raisins

Yes, these are foods dogs can’t eat. Grapes and raisins are known to have detrimental effects on your dog’s kidneys, even causing kidney failure. This includes foods like mince pies, fruit cake and hot cross buns. Unfortunately, there’s no clear link between the size of your pup and the amount eaten when determining the seriousness of grape poisoning in doggos. This means it’s best to keep them out of reach of your dog completely.

If you’re concerned your dog has consumed grapes, sultanas and raisins, make sure to contact your vet pronto. 

A white woman's hand offers an Australian Shepherd Dog a snack from her right hand in sunlight

Onions, Garlic & Chives

These are more dangerous for cats to eat than dogs, but can still be toxic if large amounts are consumed by your pooch, whether in powder, cooked or raw form.

Onions contain a substance called thiosulfate, which dogs don’t have the ability to digest. You can imagine how uncomfortable their stomachs will feel!

When dogs consume onions or garlic, the food might kill a large number of red blood cells, which can lead to anaemia. If your dog eats a substantial amount, signs you will need to look out for are:

  • Weakness
  • Vomiting
  • Breathing problems

At worst, consuming large amounts of onion can cause red blood cell damage in your dog, but gastrointestinal irritation is more likely.

If your pooch has consumed a sizeable amount of onions, garlic or chives, consult their veterinarian as soon as possible, then they can carry out any necessary procedures

Xylitol (Sweetener)

Xylitol is an artificial sweetener found in a lot of human food products. If a dog were consume xylitol it can even have deadly effects, as well as a rapid decline in blood sugar and permanent liver damage. It can also cause an increase in insulin, resulting in hypoglycaemia, symptoms being lethargy, vomiting and loss of coordination. The smaller your dog, the less xylitol it needs to consume in order for it to have dangerous implications. So, xyltiol is certainly a food dogs can’t eat. 

You need to act fast if your dog has digested xylitol, as it can take effect as quickly as 30 minutes after consumption. Symptoms will continue to show up to 12 hours after. Your veterinarian will diagnose the seriousness of it, but treatment will probably require hospitalisation.

A brown and white spaniel takes a long chew treat in his mouth from a white person's hand

Salt

If your dog has consumed large amounts of salt it can result in sodium ion poisoning. Due to the dehydrating effects of salt, consumption of a salty snack can cause excessive thirst and urination. In severe cases, symptoms can additionally include vomiting, diarrhoea and a high temperature. It can even cause fatality in extreme cases.

The first thing to do if you know your dog has eaten a salty food is to give them a large bowl of water. Rehydrating them is the first step towards avoiding salt poisoning. As soon as you’ve done that, call the vet. In some circumstances hospitalisation may be necessary for treatment, but the veterinarian can help diagnose how serious the situation is.

For a handy list of all foods that are toxic for dogs and that dogs can’t eat, we’ve put together a table of all known foods to avoid:

a blue and white infographic detailing which foods are known to be toxic to dogs
Becca TriggB
Written by

Becca Trigg

Becca Trigg is a content creator and pet-industry writer, with over 5 years of experience at PetLab Co. She is an all round animal lover, with a keen interest in canine joint health, dental hygiene and nutrition. When she’s not typing away in the office, she can be found sitting in a country pub, growing chillies or cuddling up with her family dog Maggie, a chocolate Labrador.

Stay up to date

Get notified when I publish something new, and unsubscribe at any time.

Published by

newsletter

Join Our Mailing List For Pupdates & Access To Special Discounts!

facebookinstagramyoutubetiktok

Pay Securely With

Visa card
Mastercard
American Express card
PayPal
Disover card
Google pay
Apple pay

© 2025 PetLab Co.

The information contained within this site is not intended as a substitute for professional medical or veterinary advice. PetLab Co. is not intended to diagnose, treat, cure or prevent any disease. If your pet has, or you suspect your pet has any medical condition, you are urged to consult your veterinarian. Medical conditions can only be diagnosed by a licensed veterinarian. These statements have not been evaluated by the Food and Drug Administration. Results May Vary. Not intended for human consumption. Please consult your veterinarian regarding any change in treatment or supplementation.
*In Amazon Pet Health Category in 2022
Back to top button