Is sleeping with your pet really bad for you?

For many pet owners, bedtime isn't complete without a furry companion curled up beside them. But while some people swear sleeping with their dog or cat helps them relax, others argue it's unhygienic and ruins sleep quality. So who's right?

According to sleep specialists and veterinarians, the answer isn't as straightforward as you might think.

When sleep psychologist Shelby Harris begins working with patients struggling with sleep, one question almost always comes up: Do you sleep with a pet?

"The first thing they say to me is, 'I have a dog. You're going to tell me not to sleep with the dog,'" she told The New York Times.

But Harris doesn't automatically recommend banishing pets from the bedroom. For many people, sharing a bed with an animal brings comfort, and not everyone experiences disrupted sleep. The key, she says, is figuring out whether the pet is actually contributing to sleep problems.

It's also far from uncommon. An online survey of roughly 2,000 adults found that nearly half sleep in the same bed as their pet.

There is a small health risk but it's usually low

From a hygiene perspective, veterinarians say sleeping with pets does increase your exposure to the germs they naturally carry.

Dr Josh Daniels, a veterinarian and microbiologist at Colorado State University's veterinary school, told Politis, that pets can bring bacteria, parasites, fleas and ticks into bed. While most exposures do not lead to illness, there are documented cases in which infections have occurred.

One widely cited case from 1991 involved an 81-year-old woman in Finland who developed a bacterial skin infection after her cat, which regularly slept with her, repeatedly licked an ulcer between her toes. The bacteria found in her infection are commonly present in the mouths of cats and dogs.

Another case, published in 2000, described a 69-year-old man who developed an infection around his hip surgery site after sleeping with his dog before and after the procedure. The bacteria involved were also commonly found in the mouths of cats and dogs. There have even been rare reports of people contracting plague from infected fleas after sharing a bed with their pets.

Still, these incidents are uncommon. Those with weakened immune systems or greater vulnerability to infections should be more cautious.

The most common concern isn't unusual bacterial infections, it's parasites.

Dr Aly Cohen, an extension veterinarian for the Cornell Richard P Riney Canine Health Center recommends keeping pets on veterinarian-approved flea and tick prevention treatments, since ticks can transmit serious illnesses such as Lyme disease. Routine deworming is equally important because it eliminates intestinal parasites like roundworms.

If you've recently adopted a pet from a shelter or brought home a young puppy or kitten, She also advises watching for contagious skin conditions such as ringworm, which spreads easily through direct contact. She herself sleeps with his own dog, but says responsible preventive care makes the difference.

Ultimately, the decision comes down to your personal tolerance for a small but real risk.

Your sleep may be affected more than you realize

Health isn't the only consideration. Researchers have also explored whether pets interfere with sleep itself.

Brittany Lancaster, an assistant professor of clinical psychology at Mississippi State University, based on her research in, Journal of Pediatric Psychology, says the available research is still limited, but several studies suggest pets can reduce sleep quality.

In one 2017 study, 40 dog owners wore sleep activity monitors for seven nights. Researchers found participants slept less efficiently when their dogs were on the bed compared with nights when the dogs stayed elsewhere in the room.

Interestingly, owners may not even notice the interruptions.

A small 2020 study involving 12 women who slept with their dogs found that while the animals frequently disrupted sleep, participants rarely remembered or reported those disturbances the following morning. Other studies have similarly found that many owners believe their pets actually improve their sleep, despite objective evidence showing otherwise.

William Wohlgemuth PhD Medical Professional at US Department of Veterans Affairs. Expertise in sleep disorders, believes there may be a reason for this disconnect.

In his research, he suggests that the emotional comfort of sleeping beside a beloved pet may outweigh minor disruptions in sleep quality. That sense of security and companionship could leave owners feeling more satisfied with their sleep, even if they experience more awakenings during the night.

Pets may also improve sleep indirectly. Dog owners who take their pets for daily walks often get regular physical activity and maintain more consistent wake-up times both habits that are well known to support healthy sleep.

So, should your pet stay in your bed?

There's no universal answer.

Harris recommends a simple experiment. If you suspect your pet is disturbing your sleep, have them sleep elsewhere for a few nights and see whether you wake feeling more rested. If you don't notice any difference, she sees little reason to change the routine.

Lancaster takes a more cautious approach.

"I do not sleep with my cats, if that tells you anything," she says.

For most healthy people, sleeping with a pet isn't inherently dangerous. The biggest concerns exposure to parasites, occasional germs, and subtle sleep disruptions are generally manageable with good veterinary care and healthy sleep habits.

In the end, the choice is about balancing comfort, health, and how well both you and your four-legged roommate sleep.