10 Common Dog Myths That Many People Still Believe

Dogs are loyal and full of surprises. But not everything you hear is true when it comes to their care. Some common beliefs about dogs have been passed down for generations, but are they fact or fiction? Get ready to uncover some surprising truths that might change how you see your four-legged friend!

Dogs Only Wag Their Tail When They Are Happy

A wagging tail does not always mean a happy dog. Depending on the speed, height, and stiffness of the wag, it can signal anxiety or even aggression. Studies by National Geographic show that a right-sided wag suggests relaxation, while a left-sided one may indicate stress. Always observe full-body language before assuming mood.

One Dog Year Equals Seven Human Years

The idea that one dog year equals seven human years is an oversimplification. Aging rates vary by breed and size, with smaller dogs typically living longer than large breeds. An American Veterinary Medical Association (AVMA) study suggests a more complex formula considering developmental stages rather than a fixed ratio.

Dogs Heal Their Wounds Best By Licking Them

While licking can help clean minor wounds, excessive licking often delays healing and increases the risk of infection. Although saliva contains some antibacterial properties, it also introduces harmful bacteria that can worsen the wound. Also, persistent licking may signal pain or irritation, so consulting a vet is essential for a full recovery.

Dogs See The World In Black And White

Dogs are not colorblind in the way many believe. While their vision is less colorful than that of humans, they can see blue and yellow tone variations. Their eyes contain more rod cells, making them excellent at detecting movement in low-light conditions. So, next time you throw a toy, choose blue over red.

Rescue Dogs Have Behavioral Problems

Many shelter dogs are surrendered due to life changes, not necessarily bad behavior—divorce and housing restrictions force owners to give up well-mannered pets. As per the American Society for the Prevention of Cruelty to Animals (ASPCA), about 47% of surrendered dogs have behavioral issues; most can be resolved with patience and proper training.

Specific Dog Breeds Are Completely Hypoallergenic

No breed is 100% hypoallergenic. While some produce fewer allergens, all dogs shed skin cells (dander) that trigger allergies. Poodles and Portuguese Water Dogs may be at lower risk, but allergen levels vary between individual dogs. Regular grooming and cleaning help reduce allergen buildup in any breed.

Dogs Eat Grass Just When They Are Sick

Grass-eating is a normal behavior, not necessarily a sign of illness. Some dogs enjoy the taste, while others chew grass for fiber or digestive support. However, excessive grass consumption, especially if accompanied by lethargy or dietary changes, could indicate an underlying issue. A veterinary check-up may be needed if your dog suddenly eats grass compulsively.

Dogs Feel Guilty When They Misbehave

That “guilty” look is not a sign of remorse; it’s a reaction to your tone and body language. Dogs display appeasement behaviors, like lowered ears and curled tails, regardless of whether they misbehave. Their response is about avoiding conflict and not understanding wrongdoing.

Feeding Dogs Table Scraps Is Always Harmful

While toxic foods like chocolate and grapes should always be avoided, plain chicken or blueberries provide valuable nutrients. However, foods high in fat or artificial additives, like fried foods or processed meats, can lead to obesity and pancreatitis. When in doubt, always check with a vet before offering table scraps.

You Cannot Teach An Old Dog New Tricks

Age does not prevent learning. Older dogs may take longer to pick up new commands, but they can fully adapt with patience and motivation. Mental stimulation through puzzle toys and obedience training helps keep their brains sharp and slows cognitive decline. Additionally, positive reinforcement and consistency make learning enjoyable at any age.