What’s good for dogs comes down to a handful of basics: the right nutrition, enough exercise, mental stimulation, proper dental care, adequate sleep, and a safe environment free from toxic foods and plants. Getting these fundamentals right has more impact on your dog’s quality of life than any single product or trend.
Nutrition That Actually Matters
Dogs need a diet built around protein and fat. Adult dogs require a minimum of 18% protein on a dry-matter basis, while most commercial dog foods contain between 5% and 15% fat. The balance of calcium to phosphorus also matters and should fall in a ratio of roughly 1.2 to 1.4 parts calcium for every 1 part phosphorus. A complete commercial food that meets AAFCO guidelines will cover these bases without supplementation for most healthy dogs.
One ongoing question involves grain-free diets. The FDA began investigating a potential link between grain-free dog foods and dilated cardiomyopathy (a serious heart condition) in 2018. Many of the flagged diets contained high proportions of peas, lentils, and potatoes as primary ingredients, and cases appeared in breeds not typically prone to the disease. As of the FDA’s most recent update, a definitive causal link hasn’t been established, but the investigation remains open. The agency describes it as a complex issue likely involving multiple factors. If you’re feeding a grain-free diet, it’s worth discussing with your vet, especially for breeds without a known genetic predisposition to heart disease.
Foods That Are Dangerous for Dogs
Several common human foods are genuinely toxic to dogs, not just unhealthy but potentially fatal.
- Chocolate. Contains theobromine and caffeine, which dogs metabolize far more slowly than humans. Symptoms appear within 6 to 12 hours: vomiting, diarrhea, excessive thirst, and restlessness, potentially progressing to heart arrhythmias, seizures, or worse. Dark chocolate and baking chocolate are the most concentrated.
- Grapes and raisins. Can cause kidney failure in dogs. The exact toxic compound is still unknown. Vomiting typically starts within 6 hours, and kidney failure can develop within 24 to 72 hours.
- Onions and garlic. Contain compounds that damage red blood cells by interfering with their ability to carry oxygen. As little as 15 to 30 grams per kilogram of body weight can cause significant blood changes in dogs. Early signs include vomiting and diarrhea, followed by pale gums, rapid breathing, and dark urine.
- Macadamia nuts. Trigger weakness (especially in the hind legs), vomiting, tremors, and fever within 12 hours of ingestion.
- Avocado. Contains persin, a compound that can cause fluid accumulation in the lungs and chest, leading to breathing difficulty.
If your dog eats any of these, contact your vet or the ASPCA Animal Poison Control Center immediately. Speed matters, particularly with grapes and chocolate.
Household Plants to Watch For
Many common houseplants are toxic to dogs. The ASPCA maintains a database of hundreds, but some of the most frequently found in homes include aloe, amaryllis, elephant’s ear, American holly, and yew. Sago palms, lilies, and dieffenbachia are also common offenders. If your dog is a chewer, check every plant in your home against the ASPCA’s toxic plant list before keeping it within reach.
Exercise by Breed and Age
How much exercise your dog needs depends heavily on breed group and age. Sporting and herding breeds were developed for endurance work and have the highest daily exercise demands. Think retrievers, border collies, and Australian shepherds. These dogs typically need at least an hour or more of vigorous activity each day, and they don’t do well with just a short walk around the block.
Toy breeds and older dogs need less intensity but still benefit from daily movement. A good daily walk keeps joints mobile and weight in check, even for a senior Chihuahua. Puppies are a special case: they have bursts of wild energy but tire quickly, and their growing joints can be damaged by too much high-impact exercise like long runs or repeated jumping. Short, frequent play sessions work best for young dogs.
Mental Stimulation Reduces Stress
Physical exercise alone isn’t enough. Dogs need mental engagement, and the type of enrichment matters more than you might expect. A pilot study evaluating seven types of enrichment activities found that all of them significantly increased relaxation behaviors and reduced stress-related behaviors in dogs. But not all activities were equally effective.
Playing with other dogs and exploring novel environments (like a playhouse setup) produced the greatest behavioral improvements. Tug-of-war also scored well. Interestingly, food puzzles and stuffed food toys, often marketed as the gold standard of enrichment, produced the least behavior change of all the activities tested. Social contact enrichment has been linked to lower cortisol levels, less repetitive behavior, and more time spent relaxed. The takeaway: interactive play with you, other dogs, or in new environments does more for your dog’s mental health than a puzzle feeder alone.
How Much Sleep Dogs Need
Dogs sleep a lot more than most people realize. Adult dogs typically get 6 to 8 hours overnight plus another 4 to 8 hours of napping during the day, totaling up to 16 hours. Puppies need even more. During critical growth periods, puppies can sleep up to 20 hours a day because significant brain and body development happens during rest. Senior dogs also trend toward more sleep as aging brings joint pain, reduced vision, and hearing loss. A comfortable, quiet sleeping spot is one of the simplest things you can provide at any life stage.
Dental Care Is Underrated
Most dog owners overlook dental health, but the Veterinary Oral Health Council recommends brushing your dog’s teeth every single day, ideally covering all surfaces of all teeth. That recommendation surprises a lot of people, but dental disease is one of the most common health problems in dogs, and it can lead to pain, infection, and organ damage over time.
If daily brushing isn’t realistic for you, aim for as many days per week as you can manage. Look for dental chews and treats that carry the VOHC seal of acceptance, which means they’ve been tested and shown to reduce plaque or tartar. These aren’t a replacement for brushing, but they’re a useful supplement. Getting your dog used to having their mouth handled early in life makes the whole process dramatically easier.
Vaccinations and Preventative Care
Vaccines are divided into two categories: core vaccines, which every dog should receive, and noncore vaccines, which depend on your dog’s lifestyle and risk factors. The 2022 AAHA canine vaccination guidelines (updated in 2024) recommend tailoring the schedule based on individual patient risk. Your vet will assess factors like geographic location, exposure to other dogs, and time spent outdoors to determine which noncore vaccines make sense. Staying current on core vaccines and parasite prevention is one of the highest-impact things you can do for your dog’s long-term health.