How do I keep my dog healthy?
Most of a dog's health rests on four things: puppy vaccines finished at 16 weeks of age or older, parasite prevention kept up through the year, a lean body weight and a yearly vet check. Dogs live about 10 to 13 years, longer in small breeds and shorter in giant ones.
Updated November 8, 2026
What should I know about dogs at a glance?
Dogs are social animals that need company, daily exercise and a vet visit at least once a year.
| Fact | Dogs |
|---|---|
| Lifespan | About 10 to 13 years. Giant breeds 7 to 10, small breeds often 14 to 16 |
| Adult weight | From under 2 kg (Chihuahua, Yorkshire) to over 80 kg (English Mastiff, Saint Bernard) |
| Where it lives | Indoors or in a yard, with daily walks |
| How social | Very. Dogs do poorly left alone for long hours |
| First vaccines | From 6 to 8 weeks of age, in WSAVA's guidelines |
| Heat in females | About every 6 months, lasting about 3 weeks, when not spayed |
| Pregnancy | About 63 days |
What do vets see most in dogs?
Skin and ear problems, dental disease and excess weight are the most common reasons a dog sees a vet. In puppies that are not fully vaccinated, parvovirus and distemper are the serious risks.
- Skin and ear disease: itching, ear infections and allergies.
- Dental disease: tartar, sore gums and loose teeth.
- Obesity, which adds joint, heart and skin problems.
- Joint problems, especially in large breeds.
- Tick-borne diseases. In Brazil, ehrlichiosis and babesiosis (the "doença do carrapato") come from the brown dog tick, which lives inside houses and kennels.
- Visceral leishmaniasis, spread by sand flies in Brazil and around the Mediterranean, which can also pass to people.
- Breathing problems and heat stroke in flat-faced breeds (Pug, French Bulldog, English Bulldog, Shih Tzu).
- Pyometra, a uterine infection in females that are not spayed, usually in the weeks after a heat.
- The MDR1 gene in herding breeds (Border Collie, Australian Shepherd, Collie and others), which makes ivermectin and some other drugs dangerous. A DNA test tells for sure.
Which vaccines does my dog need?
WSAVA's 2024 guidelines call distemper, adenovirus (hepatitis) and parvovirus core for every dog, with rabies where the disease is present or the law requires it, and leptospirosis where it is common, which includes Brazil. Kennel cough and the others are non-core: your vet chooses them by your dog's life and where you live.
WSAVA's guidelines start core vaccines at 6 to 8 weeks of age, repeat them every 2 to 4 weeks until 16 weeks of age or older, and advise another dose at or after 26 weeks. After that, core vaccines are repeated no more often than every 3 years, leptospirosis every year, and rabies as the local law or the label says. Your vet sets the plan.
The same vaccines carry different names in each country. This is what owners see on the card, and the rabies rule.
| Country | Names on the card | Rabies |
|---|---|---|
| Brazil | V8, V10 (also V11, V12), antirrábica | Free every year in public campaigns, and required by city laws in places such as São Paulo, for dogs over 3 months |
| Portugal | Polivalente (DHPPi + L) | Required by law for dogs over 3 months |
| United States | DHPP (DA2PP), leptospirosis, Bordetella | Required by state law in most states. Hawaii has no statewide rule |
| United Kingdom | DHP, DHPPi, lepto, kennel cough | Required to travel abroad |
| Mexico and Latin America | Quíntuple, séxtuple, óctuple | Mexico's official standard (NOM-011) sets a dose every year for life, free at public vaccination posts |
| Spain | Polivalente (DHPPi + L) | Required in 15 of the 17 autonomous communities, and in Ceuta and Melilla |
| France | CHPPi, CHPPiL | Required for category 1 and 2 dogs, and to travel abroad |
| Germany | SHPPi, SHPPiL | Required to travel abroad |
| Italy | CEPPi, CEPPiL (polivalente) | Required to travel abroad |
| Japan | 混合ワクチン (5種 to 10種) | Required by law every year (狂犬病予防法), with a new tag from the city each year |
To travel within the EU, a dog needs a microchip, a pet passport and a rabies vaccine given at 12 weeks or older, at least 21 days before the trip.
Leishmaniasis vaccines differ by region. In Brazil, Leish-Tec has been off the market since May 2023. In southern Europe, vets use LetiFend after a negative leishmaniasis test.
How often should I deworm my dog, and what about fleas, ticks and heartworm?
ESCCAP's European guidelines suggest deworming, or testing the stool, at least 4 times a year when a dog's risk isn't known, and monthly for dogs at higher risk. CAPC in the US suggests broad-spectrum parasite control all year, heartworm prevention included. The product and the interval are your vet's call.
- Puppies: ESCCAP suggests the first deworming at 14 days of age, then every 2 weeks until 2 weeks after weaning, and monthly up to 6 months when the risk continues. CAPC also starts at 2 weeks.
- Stool tests: CAPC suggests at least 4 in the first year and 2 a year for healthy adults.
- Heartworm: mosquitoes spread it. The American Heartworm Society says to test every 12 months and give prevention 12 months a year. In Japan and parts of Europe, vets often give it through the mosquito season instead.
- Ticks in Brazil: the brown dog tick lives inside houses, so indoor dogs need protection too.
- Leishmaniasis: in Brazil and southern Europe, a collar or spot-on that repels sand flies is the main protection. Brazil's health programmes use deltamethrin collars.
- Cats in the house: keep cats away from dogs treated with permethrin, because it can poison them.
Which signs in a dog can't wait?
Call your vet or an emergency clinic now if your dog shows any of these. They can turn serious within hours.
- A swollen belly with retching that brings nothing up is an emergency. Call your vet now.
- Straining with little or no urine can mean a blocked bladder. Call your vet now.
- Noisy or hard breathing at rest is not normal, even for a flat-faced dog.
- Heavy panting, drooling or weakness after heat or exercise can be heat stroke.
- Collapse, pale or blue gums, or a seizure that lasts more than a few minutes.
- Repeated vomiting or bloody diarrhea, especially in a puppy that hasn't finished its vaccines.
- Eating chocolate, grapes or raisins, xylitol (in sugar-free gum), rat poison or human medicines.
- Discharge, drinking more or a swollen belly in the weeks after a heat can mean a uterine infection. See your vet.
- A fall, a bite or being hit by a car, even when your dog seems fine.
How do I care for my dog day to day?
The habit that prevents the most illness is keeping your dog lean. In a lifelong study of Labrador Retrievers, dogs fed 25% less than their littermates stayed slimmer, lived longer and showed signs of chronic disease later.
- Food: a complete food for your dog's life stage, measured each day. Treats count.
- Weight: weigh your dog every month or two. Your vet can score body condition from 1 to 9, where 4 and 5 are ideal.
- Exercise: daily walks and play, adjusted to age and breed. Flat-faced dogs overheat fast. Walk in the cool hours and stop if breathing gets loud.
- Teeth: daily brushing with a dog toothpaste is the best home care. A full cleaning is done under anesthesia.
- Skin folds (Pug, Bulldogs, Shar Pei): folds trap moisture and dirt. Cleaning and drying them every day prevents skin infections.
- Handling: get a puppy used to having its paws, ears and mouth touched, so vet visits stay calm.
- Puppies: until the vaccine series is done, keep your puppy away from places where unknown dogs go, and ask your vet about safe ways to meet other dogs.
How do I keep my dog's health record?
VetVitae keeps your dog's vaccination card with sticker photos, deworming and flea and tick doses with their next dates, weight with the body condition score, vet visits and tests. It reminds you before each one is due.
VetVitae is free on iPhone, Android and the web.
This guide is general information, not veterinary advice. Your vet knows your pet.
Questions
When should my puppy get its first vaccines?
WSAVA's guidelines start a puppy's core vaccines at 6 to 8 weeks of age and repeat them every 2 to 4 weeks until 16 weeks or older, because antibodies from the mother can block earlier doses. Rabies usually comes from 12 weeks. Your vet sets the exact dates and brands.
Is V10 better than V8?
V10 and V8 protect against the same viruses: distemper, two adenoviruses, parvovirus, parainfluenza and coronavirus. The difference is leptospirosis: V8 covers 2 strains (Canicola and Icterohaemorrhagiae) and V10 adds 2 more (Grippotyphosa and Pomona). Which strains matter depends on the region, so ask your vet which one fits where your dog lives.
Is the rabies vaccine required by law?
Rabies vaccination for dogs is required by law in Japan, Portugal, most US states, 15 of Spain's 17 autonomous communities and many Brazilian cities, among other places. In the UK, Germany and Italy it is required to travel abroad, and in France for category 1 and 2 dogs and for travel. Your vet or the local health office knows the rule where you live.
How often should I deworm my dog?
ESCCAP's guidelines suggest at least 4 times a year when a dog's risk isn't known, and monthly for dogs at higher risk, such as dogs that hunt, eat raw meat or play with many other dogs. Puppies are dewormed more often, from 2 weeks of age. A stool test can replace a routine dose. Your vet picks the product and the interval.
My dog isn't eating. When should I worry?
A healthy adult dog that skips one meal but is otherwise bright can be watched for a day. Call your vet if your dog hasn't eaten for more than 24 to 48 hours. Call now if not eating comes with vomiting, diarrhea, weakness, a swollen or tense belly or pain. A puppy that skips meals should see a vet the same day.
Does my dog need vaccines every year?
Not every vaccine. WSAVA's guidelines repeat distemper, adenovirus and parvovirus no more often than every 3 years after the first year, but leptospirosis needs a dose every year. Rabies follows the local law or the label, which is every year in places such as Japan. Many vets in Brazil give the multipurpose vaccine yearly. Follow your vet's plan.
Does an indoor dog need tick and flea protection?
Yes, in many places. In Brazil, the brown dog tick lives and breeds inside houses and kennels, and it spreads ehrlichiosis and babesiosis. Fleas also come indoors on people and other pets. CAPC suggests flea and tick control all year. Your vet can pick the product.
Sources
- WSAVA guidelines for the vaccination of dogs and cats, World Small Animal Veterinary Association, 2024
- Recommendations on vaccination for Latin American small animal practitioners, WSAVA, 2020
- 2022 AAHA canine vaccination guidelines, American Animal Hospital Association, 2022
- Worm control in dogs and cats, ESCCAP Guideline 01, seventh edition, 2025
- Control of vector-borne diseases in dogs and cats, ESCCAP Guideline 05
- General guidelines for dogs and cats, Companion Animal Parasite Council
- Ticks, Companion Animal Parasite Council
- Heartworm basics, American Heartworm Society
- Brown dog tick, Western College of Veterinary Medicine, University of Saskatchewan
- Leishmaniose visceral, Ministério da Saúde, Brazil
- Leishmaniose visceral canina, Prefeitura de Belo Horizonte
- Retomada da vacina contra leishmaniose visceral canina é uma incógnita, Metrópoles
- Campanha de vacinação contra a raiva, Câmara Municipal de São Paulo, 2012
- Raiva, Ministério da Saúde, Brazil
- Vacine seu cão e gato contra a raiva, campaign poster, Ministério da Saúde, Brazil, 2022
- Portaria n.º 264/2013, Diário da República, Portugal, 2013
- Rabies vaccination and exemption laws for dogs, Animal Legal and Historical Center, Michigan State University College of Law, 2023
- Taking your pet dog, cat or ferret abroad: rabies vaccinations and boosters, GOV.UK
- NOM-011-SSA2-2011 para la prevención y control de la rabia humana y en los perros y gatos, Diario Oficial de la Federación, Mexico, 2011
- Nota sobre las frecuencias de revacunación antirrábica de las Comunidades Autónomas, MAPA and AEMPS, Spain, 2026
- Avoir un chien de catégorie : quelles sont les règles ?, Service-Public.fr
- EU rules on travelling with pets, Your Europe, European Union
- 狂犬病, Ministry of Health, Labour and Welfare, Japan
- Effects of diet restriction on life span and age-related changes in dogs, Kealy and others, Journal of the American Veterinary Medical Association, 2002
- Gastric dilatation-volvulus, American College of Veterinary Surgeons
- Pyometra in dogs, VCA Animal Hospitals
- Heat stroke in dogs, VCA Animal Hospitals
- People foods to avoid feeding your pets, ASPCA Animal Poison Control
- Dog not eating? Causes and when to call your vet, PetMD, 2026
- Skin fold dermatitis in dogs, PDSA
- Dental scaling without anesthesia, American Veterinary Dental College
- Permethrin poisoning in cats, International Cat Care
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