10 Common Pet Myths, Busted

For everything we know and have learned about our animal companions, some myths still stick around like your dog’s favorite chew toy. They get passed down at the dog park, brought up at parties, or repeated with confidence by well-meaning neighbors. But when it comes to our pets, misinformation can lead to missed opportunities for care, training, and connection.

So let’s set the record straight. We’re untangling tall “tails” and sniffing out the facts behind some of the most popular pet misconceptions — plus we’ll give you some actionable tips to help you treat your pet pals even better. 

Contents:

Myth #1: “Dogs Only See in Black and White”

The Truth:
While they are “colorblind,” dogs can actually see some colors, just not the whole rainbow. Dogs have only two types of cone cells in their eyes, as opposed to the three types of cone cells in human eyes. This makes their vision similar to a person with red-green color blindness. Dogs see shades of blue, yellow, and gray best, while reds and greens appear more like gray, brown, or yellow.

Consider This:
Next time you’re choosing toys or accessories, skip the red and grab something blue or yellow, since it’ll pop more for your pooch. You can also use this knowledge when setting up your dog’s space. Picking the right colors for beds or food bowls can make their world a little more engaging and easier to navigate.

Myth #2: “Cats Can’t Be Trained”

The Truth:
Felines may be independent and a little stubborn, but they’re totally trainable — with the right motivation (read: treats). In fact, cats respond well to clicker training, routines, and even voice cues. Their intelligence and curiosity make them perfect candidates for positive reinforcement.

Consider This:
Start with simple commands like “sit” or teaching your cat to high-five. Gradually move on to recall or learning to use a pet door. Not only does training strengthen your bond, but it also helps curb unwanted behavior by giving your cat a productive outlet.

Myth #3: “One Dog Year Equals Seven Human Years”

The Truth:
It’s more complicated than that, and the way canines age isn’t really comparable to human aging. Dogs age faster in their early years, and breed and size play a big role. A one-year-old dog is roughly the equivalent of a 15-year-old human, and after they turn three, they’re aging about 5 human-equivalent years with every birthday. As they mature, their aging slows, though large breeds tend to age faster than smaller ones.

Consider This:
Ask your vet for guidance on age-appropriate nutrition, exercise, and preventive care. Your “puppy” might actually be a middle-aged dog in disguise! Understanding your dog’s true stage of life can help you support their health every step of the way.

Myth #4: “Indoor Pets Don’t Need Preventatives”

The Truth:
Mosquitoes, fleas, and ticks can sneak into the cleanest homes easier than trained spies. Even pets who rarely venture outdoors or into the wild are at risk for heartworms, parasites, and more — especially if you live in a warm, humid, or wooded region.

Consider This:
Stay consistent with monthly preventatives and annual checkups. These small steps can protect your pet from potentially life-threatening diseases, many of which don’t show symptoms until it’s too late. Even indoor cats benefit from year-round protection!

Learn More About Heartworm Protection

Myth #5: “A Wagging Tail Always Means a Happy Dog”

The Truth:
Not quite. A wagging tail can signal happiness, but it can also mean stress, nervousness, or even aggression. The key is in how the tail moves. A loose, sweeping wag is usually friendly, while a stiff, high wag or quick movements can indicate alertness or agitation. Dogs use their tails as a communication tool, and different tail positions or speeds can carry very different messages.

Consider This:
Observe your dog’s whole body, not just the tail. Look at their ears, posture, and facial expressions. If the tail is wagging but the body seems tense, it’s best to give them space. Learning your dog’s unique signals can help you better understand their mood and respond appropriately.

Myth #6: “If a Cat Is Purring, They’re Happy”

The Truth:
Just as with dogs and wagging tails, cats’ expressions aren’t always straightforward, either. Purring often signals contentment, but cats also purr when they’re frightened, stressed, or in pain. It’s their way of self-soothing, much like a child sucking their thumb. Some cats even purr at the vet’s office — not because they’re relaxed, but because they’re trying to calm themselves down.

Consider This:
Pay attention to the context. If your cat is hiding, not eating, or showing other signs of discomfort while purring, it could be time to visit the vet. Learn your cat’s habits and pair purring with other cues like tail movement, vocalizations, and posture for a more complete understanding of how they’re feeling.

Myth #7: “Cats and Dogs Can’t Get Along”

The Truth:
They absolutely can, and some become the best of friends! It all depends on personalities and how their first meetings are handled. With time and proper introductions, peaceful coexistence is totally possible. In fact, many households report that their cat and dog play, cuddle, soothe, and even groom each other.

Consider This:
Introduce pets gradually, with supervised interactions and separate safe spaces. Use treats and positive reinforcement to build good associations. Patience is key! Some pets may take weeks (or longer) to warm up to one another, but the result can be a truly heartwarming friendship.

Myth #8: “Pets Don’t Need Dental Care”

The Truth:
They really do! Some people assume that because wild cats and dogs don’t get their teeth brushed, that means domesticated animals don’t need dental care — but wild animals often suffer from dental diseases and complications we’d hope to spare our pets from. Plaque and tartar can cause gum disease, tooth loss, and even impact heart and kidney health. Left untreated, dental disease can also cause chronic pain that your pet may hide until it becomes severe.

Consider This:
Brush your pet’s teeth regularly with pet toothpaste designed to be safe when swallowed (and often flavored like their favorite foods). Also ask your vet about dental treats, chews, and routine cleanings. It might take time for your pet to get used to a dental routine, but building the habit early makes it easier on both of you.

Myth #9: “Pet Doors Are Only for Dogs”

The Truth:
Not at all, and cats certainly love a bit of freedom! They can be trained to use a door just about as easily as a dog, and experience many of the same behavioral and mental benefits from the added independence and stimulation. Cats often appreciate the ability to choose their own space, and a pet door gives them safe, controlled access to their favorite spots.

Try This:
Explore options like wall or screen pet doors, purrfect for cats. Give your kitty safe access to an enclosed patio or fresh air without worrying about escapes or bugs. Hale’s in-screen and smaller flap sizes are ideal for feline use, offering both security and independence.

Read More: The Ultimate Guide to Choosing the Right Cat Door for Your Feline Friend

Myth #10: “Pet Doors Are Unsafe or Drafty”

The Truth:
This myth has stuck around like fur on a velvet couch. But high-quality pet doors — like those from Hale — are designed to provide convenience, safety, and efficiency. They’re not the flimsy flaps of yesteryear; these are made from the highest-quality materials, thoroughly tested, and engineered for comfort as well as peace of mind.

Consider This:
Choose the right door for your space and your pet’s needs. Hale’s screen pet doors are perfect for summer ventilation while keeping bugs out. Wall-mounted pet doors offer a sleek, customizable solution for outdoor access. In-glass and French door options provide flexible access without compromising your home’s aesthetic. Plus, security covers and sturdy flaps ensure your home stays secure and energy efficient, even in stormy seasons.

Read More: We Debunk Myths on Pet Door Safety

Leave the Myths in the Doghouse

Every good pet owner wants to do right by their furry friend, and a big part of that is looking for facts over fables. Maybe that means retraining your brain about cat behavior, or realizing that your golden retriever isn’t dumb just because they can’t find their red ball in a green field — either way, every pet can benefit from their owner working to understand them and their needs a little better. 

And when it comes to giving your pet freedom to explore without compromising comfort or security? That’s not a myth. That’s a Hale Pet Door.

Explore pet doors and accessories that are made with real pets (and real facts) in mind.