One of the best parts of having a pet is the constant companionship. What is better than having a warm pup to snuggle with on a cold winter night? Not many things—but it turns out that letting your pet sleep in your bed may be more harmful than you think.

You Can Be Contracting Parasites

Sleeping next to your pooch may seem harmless, but there may be more sinister creatures lurking in your sheets. Your pet can transmit parasites such as roundworm to you, especially if your companion isn’t getting regular check-ups at the vet. Parasite eggs can live on an animal’s coat and make a home out of your sheets—yikes.

You Run The Risk Of Meningitis

Sleeping with your pet may lead to their affection and kisses, which can increase your chances of developing meningitis, an infection that leads to the swelling of the brain and spinal cord. Meningitis can lead to a stroke and can even be fatal, making sleeping next to your animal a danger when it comes to your health.

Things Can Get Really Unsanitary

As much as you love them, your cat or dog may not have the cleanest habits in the entire world. They are most likely rubbing fecal matter on your pillow or blankets. This may not be intentional of course, because pets tend to carry some amount of poop on their paws. Still, not the healthiest thing to be tracking where you sleep.

Bubonic Plague, Anyone?

No, this isn’t 14th century Europe—but sleeping with your pet increases your chances of contracting the Bubonic plague. It’s entirely possible that your cat or dog has fleas that carry this disease, which is beyond terrifying. The Black Death is obviously nothing to mess with, even with modern medicine.

Allergy Sufferers Beware

Two words: PET DANDER. If you are already suffering from allergies, sleeping with your beloved pet may only intensify your annoying symptoms. It may be best to have them sleep next to your bed to prevent a bad flare-up. It may be a tough transition for you and your pup, but you will be thankful in the long-run.