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20 Dangerous Things To Keep Away From Your Chihuahua

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fawn colored chihuahua sitting by a cup of coffee

Hey there! If you have a Chihuahua or any other dog, it’s important to know about the things that can be dangerous for them.

We’ve put together a list of 20 items that you should keep away from your furry friend. Some of these things might seem harmless to us humans, but they can be extremely toxic to dogs.


Most people know about this but just in case you didn’t, never let your dog eat chocolate. I have personally lost a beloved beagle because he got into a large chocolate candy bar without our knowledge. The only way we knew this is what killed him is that he had an autopsy. It was a horrible experience and one I don’t wish on anyone else.

happy chihuahua holding a red heart box of chocolates


Caffeine in coffee, soft drinks, or anything else is toxic to dogs and can be deadly.

3-Cocoa Mulch

It’s often sold in garden centers and just like chocolate, it can be deadly if ingested.

4-Lawn Chemicals (pesticides, herbicides, plant foods, and fertilizers)

Some of these can be fatal if your dog gets into them. There is a danger too if these things get on your dog’s feet and they lick them off.

5-Pesticides used for bugs and rodents

Even if you keep the pesticides away from your pup, if your dog finds a poisoned rodent and eats it, he will also ingest that poison. For a small dog like a Chihuahua, it can be fatal.

6-De-icing Salts

These are sometimes used to de-ice your car windshield. Once they get on the ground, your dog can get the residue on their paws. When your dog licks his paws, he ingests the poison. Keep booties on your dog in the winter if you live in a cold climate. Or make sure you wash your dog’s paws off after they come in from a walk.

7-Old Antifreeze

Antifreeze traditionally had a sweet taste that was attractive to dogs. Recently manufacturers have voluntarily added a bitter agent to the antifreeze to discourage animals from trying to drink it. Be aware if you have any old bottles of antifreeze stored in your garage that it doesn’t have this agent. Antifreeze is highly toxic to animals and will kill them.


You may not know what Acetaminophen is but I’m sure you probably know what it is by its brand name which is Tylenol. It’s toxic in dogs. In fact, many medications that are fine for humans are toxic for pets so be sure to keep them out of their reach.


Many houseplants and garden plants are toxic to dogs if they happen to eat them. The Humane Society has a document that lists all the poisonous plants. You can find it here:

hand holding grapes in front of black and tan chihuahua

10-Grapes and Raisins

One grape may not hurt your dog (unless your Chi is a puppy or very tiny) but a handful or more can cause liver and kidney damage.


Avocados contain a substance called Persin which is mildly toxic to dogs.

12-Bread Dough

Bread dough contains yeast which if it is ingested, can cause serious illness and sometimes even death.

13-Moldy Food

Of course, we would not eat moldy food. But your dog may find it in the garbage and eat it. Moldy food contains Mycotoxins which will make your dog ill if they eat it.

14-Macadamia Nuts

Although nuts are a healthy snack for humans, they are not for dogs. Many varieties of nuts can cause some problems but Macadamia nuts are the worst of the lot.


Onions in any form (cooked, raw, onion powder) contain thiosulphate which will cause dogs to develop a serious type of Anemia several days after they eat the onions. Garlic is also toxic but to a lesser degree.

16-Fish and Chicken Bones

These bones tend to be very brittle and sharp and can cause serious injury to your dog’s digestive system.


Xylitol also known as Birch Sugar, is a sugar substitute often found in chewing gum, breath mints, candy, some peanut butters and some diet foods. It’s extremely toxic to dogs.


Beer, wine, and hard alcohol are all no-nos for your dog. It doesn’t take much alcohol to cause alcohol poisoning in a small dog.

19-Plum and Peach Pits

The fruit itself is fine but the pits contain cyanide, which is of course a poison for humans and animals alike.

white and black chihuahua puppy laying on fruit

20- Apple Seeds

Just like with plums and peaches, the apple itself is not toxic but the apple seeds do contain cyanide.

And here’s a bonus:


The Amanita mushroom has about 600 varieties of mushrooms in its family, all of which are toxic to dogs (many are toxic to humans too).

We hope this list helps you keep your furry friend happy and healthy!

blond woman holding white chihuahua

Cathy Bendzunas

Pet Blogger

I have had dogs all my life. I have been a pet groomer, worked in a pet hotel, and a kennel, and have bred and showed dogs.
woman kneeling in front of a dog outside in snow

Paula Simons


This article has been reviewed, fact-checked, and approved by Dr. Paula Simons DVM. You can read more about her on our About page.


Wednesday 1st of December 2021

Recently I lost my dog to a cat. He was playing outside when a dirty stray cat came up and attacked him. He was only a puppy chihuahua. I had him for only 16 years, no more. Please wish he can go to heaven and I will be able to see him one day. I miss my little chi. I will keep in mind this article when I get a new chi. Please add cats to this, they are very dangerous to little chihuahuas.


Wednesday 1st of December 2021

Oh wow, I'm so sorry Sherryl! That's horrible.

H taylor

Thursday 12th of August 2021

I also would add pool products I just lost my two chi's from pool shock that when mixed with warm water exploded into a cloud. Cause lung damage to them and myself.


Thursday 12th of August 2021

Oh gosh! I'm so sorry! That's horrible.

Sharon Dorman

Wednesday 16th of September 2020

My Chihuahua drinks coffee with me every morning, has since she was small and she is now 11 yrs old and very healthy. She still even has all her teeth. Just wanted to get that out there.


Wednesday 16th of September 2020

I would be very careful with that. We lost a beagle from eating 2 large chocolate bars. Caffeine toxicity is a real thing and it can accumulate over time.


Wednesday 29th of July 2020



Wednesday 29th of July 2020

It sounds like she's missing you and afraid of being abandoned. Chihuahuas and most dogs in general, want to be with their humans all the time, including when they are asleep.


Friday 24th of July 2020

My 1yr old chihuahua is pee pad trained,but now loves to go outside. Problem is that at night when she has to go poo,she goes on the floor. Help me solve this issue.

Brittany Cutrell

Monday 27th of July 2020


Please tell me the secret to getting her pee pad trained... ours is 8 months old and does well some days and then its like one day she forgets everything she knows and just goes where ever.. it is so frustrating loll


Friday 24th of July 2020

Do you still have pee pads out? Ok this may be gross, but next time she poops, rub a little bit of it on the pee pad to attract her to it. Also if she tends to poop in one area, place a pee pad there. You can gradually start moving it closer to where you want it to be.