Dog’s Mouth or Human’s Mouth: Which Is Cleaner? The Truth Might Surprise You!

You’ve probably heard someone say:
“A dog’s mouth is cleaner than a human’s!”
It sounds funny, but many people actually believe it—and they feel totally fine letting their dog lick their face, hands, or even a wound. But is this belief really true? In this article,  Furry® will uncover the truth behind this popular idea and, more importantly, share 5 key facts about the differences between human and dog mouth cleanliness.

Is a Dog’s Mouth Cleaner Than a Human’s?

Both human and dog mouths contain hundreds of types of bacteria. But the types of bacteria are very different. Some bacteria that are harmless to dogs can actually make people sick—especially if they enter through a cut or if your immune system is weak.

For example:

• Capnocytophaga can cause serious infections in rare cases.

• Pasteurella can lead to skin infections or abscesses.
  And yes, both are found in dog saliva.

📌 In short: A dog’s mouth isn’t cleaner—or dirtier—it’s just different. But without proper hygiene, it can still carry risks.

5 Facts About Human and Dog Mouth Cleanliness Differences

1. Different Bacteria, Different Effects

Human and dog mouths both have diverse bacterial ecosystems, but their compositions are entirely different. Some bacteria in dog saliva, while harmless to them, can be harmful to humans. Likewise, humans carry bacteria that can be dangerous to dogs.

2. Dog Saliva Has Some Natural Cleaning Properties

Dog saliva contains enzymes that help with wound healing in dogs. However, these enzymes don’t have the same effect on human wounds and can actually introduce harmful bacteria if a dog licks an open cut.

3. Dogs Use Their Mouths for Everything

Unlike humans, dogs explore the world with their mouths. They lick the floor, sniff other dogs' behinds, chew on random objects, and even eat things humans find gross. This increases their exposure to bacteria and potential pathogens.

4. Humans Have Better Oral Hygiene Practices

Humans brush their teeth at least twice a day, floss, and use mouthwash. Dogs, on the other hand, rarely have their teeth brushed unless their owners take care of it. Without proper dental care, dogs can develop plaque, tartar, and gum disease.

5. Dog Mouths Can Still Transmit Germs

While many pet owners love dog kisses, it’s important to remember that bacteria and parasites can spread through saliva. It's best to avoid letting dogs lick open wounds or sensitive areas like the mouth and eyes to reduce any health risks.

Conclusion

Dogs are loving companions, and understanding the facts about their oral hygiene helps us care for them better. While dog saliva isn’t necessarily cleaner than human saliva, it’s simply different—and requires proper care. Regular dental hygiene, checkups, and setting boundaries for licking can help keep both you and your pup safe and healthy.

Keep your dog's mouth busy and healthy with our chew toys from Furry.vn! Chewing helps remove plaque and keeps their teeth strong!