Your animals may be warm and cuddly, and make the perfect sleeping partner, but it's actually highly recommended that your animals DO NOT sleep in the same bed as you. This may be a disappointment to animal lovers, but there are valid reasons why your animals should get the boot out of the bed. We are going to work through the biggest reasons that you and your furry friends should have separate sleeping compartments.
You can get sick
Dogs can carry a plethora of diseases and little mites that can actually make you sick. From the plague to fleas, dogs can transmit several different diseases to you and your sleeping partner. Not only does cuddling with them give these germs easy access to you, but your sheets and bedding can be cesspools for some of these organisms. This is why it's important to clean your sheets regularly if your dog happens to sleep with you. But more importantly, it's probably a better idea to avoid having your dogs sleep with you at all.
Pets can trigger allergies
Pets can also trigger allergies. Even though you may snuggle with your dog all the time, if your body finds their hair or anything about them to be similar to an allergen, it will initiate an allergic response. These allergies probably won't be severe anaphylaxis, but can lead to stuffy noses, water eyes, cough and irritation. All of these make for a bad mix to get a good night's sleep.
Your air and environment should be as allergen free as possible. This includes dusting and vacuuming and, once again, clean sheets to make sure you're removing as many environmental allergens as possible. The only way to potentially avoid this issue is to have a hypoallergenic dog, but even then, they may still collect something in their fur that can be an allergen.
Co-sleeping makes house training difficult
Dogs, specifically, are inclined to sleep with you due to instinct. They are pack animals who are used to getting as close as possible with other animals around them - including you. So, when they give you puppy eyes and hop in the bed, you are taking the chance that they will urinate in the bed. Especially if you have a young puppy who you are trying to house train, co-sleeping may defeat the purpose. In order to avoid confusion and to draw strict boundaries, it may be necessary to not allow them to sleep in your bed.
Your sleep will be disrupted
Animals don't have the same uninterrupted sleeping skills that humans can sometimes have. This means that they will get up and wander or run at the smallest sound. Even just the process of them getting comfortable involves them walking around in circles until they decide to plop down. All of this movement can severely disrupt your sleep as it's startling, and obnoxious.
Snoring and flatulence are also other issues that can arise during the night and interrupt your sleep. Animals sleep in so many odd positions that your face could be at the wrong end of an upset stomach. Dog breath is the worst and could also be a smell that interrupts your sleep if your dog is breathing directly in your face.
Between the noise, moving, and smells, your sleep is bound to take a turn for the worst if you let your animal sleep in the same bed as you.
Animals are bed hogs
Animals take up a lot of space, causing you to end up sleeping on the wrong side of the bed. If you're unable to get comfortable, then this can have negative ramifications on your sleep, causing you to get less than the recommended 7-9 hours. It's a good idea to have your dogs sleep near you in their own bed, but probably not in the same bed so you can ensure you're getting the amount of sleep that you need.
Source:
https://walkeepaws.com/blogs/news/5-reasons-you-shouldnt-sleep-in-the-same-bed-as-your-pet