Pet Health Myths That New Owners Often Believe

A dog's nose can be warm after sleeping, dry in low-humidity environments, or wet after licking — none of these automatically signal a health problem. Veterinarians assess health through a full physical examination, not a single physical trait. If your dog's nose is accompanied by discharge, cracking, or other symptoms, that combination warrants attention — but the nose alone tells you very little.

Research published in animal behavior journals has found that the majority of cats and dogs observed eating grass showed no signs of illness beforehand. While some animals do vomit after eating grass, vomiting appears to be a consequence in only a minority of cases, not a primary motivation. Occasional grass consumption is generally considered normal. However, if your pet is eating grass compulsively or vomiting frequently, consult your vet to rule out gastrointestinal issues.

Many serious conditions — dental disease, early kidney changes, heart murmurs, and certain cancers — develop gradually and show no obvious symptoms until they are well advanced. Annual or biannual veterinary checkups allow professionals to detect these changes early, when treatment options are more effective. Preventive care, including vaccinations, parasite screening, and weight monitoring, also happens at these visits. Waiting until a pet appears unwell often means conditions have already progressed significantly. As pets age, this becomes even more important — see our overview of senior pet health needs for context on how care requirements shift over time.

This myth likely persists because dogs' saliva was once thought to have antiseptic properties. In reality, both human and dog mouths harbor hundreds of bacterial species. The key difference is that most dog mouth bacteria are not transmissible to humans under normal conditions — but that's about species-specificity, not cleanliness. Dogs who eat feces, scavenge outdoors, or have untreated dental disease can carry pathogens that do pose risks. Good dental hygiene matters for pets just as it does for people. For more on this overlooked area, visit our guide on pet dental health.

It's true that hormonal changes following spaying or neutering can slightly reduce a pet's resting metabolic rate, which means caloric needs may decrease somewhat. However, weight gain is not an automatic outcome. Owners who adjust portion sizes and maintain regular activity can keep their pets at a healthy weight after the procedure. Allowing a pet to become overweight — regardless of cause — increases the risk of joint disease, diabetes, and other serious conditions. Our detailed article on spaying and neutering covers the full picture of what to expect.

The 'righting reflex' is real — cats instinctively rotate their bodies mid-fall to try to land feet-first — but it does not guarantee a safe landing. Falls from even moderate heights can cause broken legs, ruptured bladders, jaw fractures, and internal injuries. Interestingly, veterinary data suggests that injuries from very high falls can sometimes be less severe than those from intermediate heights, because cats have more time to adjust their posture — but this does not mean high falls are safe. Any cat that has fallen from a height should be examined by a veterinarian, even if they appear to be walking normally. Internal injuries may not be immediately visible.