We all sneak food under the table to our dog once in a while. How could you not when they give you those large, sad eyes?

But could you possibly be feeding your dog toxic food? There are many human-safe foods that could be fatal if your pup even eats a little bit. Some are well known, like chocolate, but others may surprise you.

It is important to be aware of this, because the last thing you want to do is sneak your dog a bite of food that ends up in a several thousand dollar trip to the vet.

Produce That is Toxic for Dogs

Fruits and veggies may be healthy for us humans, but even a small bit can cause a canine to have a negative reaction.

1. Grapes and Raisins

This surprises a lot of people, but the toxic level of grapes is enormous for dogs. It doesn't take many for your dog's kidney to be damaged beyond veterinarian repair. There are several substances that dog's are unable to metabolize, although more research needs to be done to find what exactly it is.

Regardless, it's indisputable that grapes are very bad for your dog and you should never let them have one. Even if a grape rolls off the counter and onto the floor, snatch it up before the living vacuum comes running in to gobble it up. 

2. Unripe Tomatoes

Red, ripe tomatoes are fine, but green and unripe tomatoes contain a toxin called solanine. This substance is also in the leaves and stem of the plant. While it would take a lot of unripe tomatoes to cause significant problems or death, your dog could experience stomach issues with only a couple. 

For this reason, if you have a garden, it is very important that you keep it blocked off to you furry friend with a fence. The last thing you ant is for them to dig up all of your hard gardening work, and get hurt in the process. 

3. Potatoes

Just like tomatoes, uncooked potatoes contain solanine. While cooked potatoes are safer because it reduces the concentration of the toxic substance, there are still reasons to avoid feeding your dogs potatoes, even if they are mashed, baked, boiled, whatever way you take them.

Cooked potatoes are usually mixed with oil and butter, which is unhealthy for your dog (not toxic, but it can lead to weight gain). They also have extra spices like garlic, which you'll later read IS toxic. 

4.  Onions and Garlic

No matter how scrumptious the smell of garlic and onions may be to us, it is fatal to your dog for a surprising reason: it causes hemolytic anemia, or low blood cell count. This is due to a substance called thiosulfate, and the results are deadly.

For this reason, you should avoid the practice of feeding table food to your dog. Garlic is a basic ingredient across all types of cuisines, so it's highly likely that the scrap you're sneaking contains garlic. 

5. Avocados

Persin is present in all parts of an avocado, which is poisonous. This substance isn't lethal unless in huge doses, but can cause vomiting and stomach issues. Avocado also contains high amounts of fat which can lead to weight gain and also causes an upset stomach. 

For this reason, make sure your trash is always locked up tight. Even if the fruit of an avocado isn't in the waste bin, just ingesting the skin can be harmful. 

6. Corn on the Cob

There's no substances in corn that is bad, but the small pieces pose a choking hazard. Also, the cob is hard to digest and this could cause their intestine to be blocked. 

Popcorn isn't bad, but make sure they don't eat any kernels. It still isn't advised to you give your pet popcorn, because it is often loaded with butter and other spices. Make sure you are paying attention to which pieces you're feeding him. 

Snacks That are Toxic for Dogs

7. Nuts

This may be one of the most shocking foods on this list since every owner knows the deep love their canine has for peanut butter. While all nuts don't have the same level of toxicity, they are all high in fat which could lead to health problems like weight gain. 

However, some nuts are particularly harmful. This includes macadamia nuts, walnuts, pistachios, cashews, pecans, almonds, and Brazilian nuts. To make sure you never accidentally slip your dog the wrong type of nut, it's best practice to avoid giving them any nuts at all. Also, make sure that you give your dog peanut butter instead of a substitute like almond butter. 

8. Pits and Seeds

Continuing with parts of veggies and fruit that is dangerous other than fruit, seeds and cores contain enough cyanide to be deadly. This is the reason humans don't eat seeds either. Cyanide is lethal for most species because it stops cell metabolism, or the body's ability to use oxygen. 

This is important to consider because so many foods that you would toss your dog without second thought could contain seeds that you need to be aware of. There are also fruits and veggies that have "flesh" that is healthy, but contains seeds. A great example of this is an apple. They are very health for dogs, but make sure the core is taken out before giving it to them. 

9. Nutmeg

Nutmeg is a powder ground from the seed of a fruit from a Myristica Fragrans tree. It contains a compound called myristicin. Nutmeg is not only commonly used in baked goods, but it is used in dishes from Indian and European cultures. 

Nutmeg is a perfect example of why you should always check the ingredients of food before feeding it to our dog, or just avoid the pleading of their puppy eyes all together. Toxic spices can easily and unknowingly make their way into the food. 

 If you are unsure about whether or not you should give a certain item of food to your dog, make sure you do your research beforehand. The extra minute you spend checking will save you loads of time at the vet and thousands of dollars.