Dogs are everywhere in Grenada: yard dogs guarding houses, beach dogs, pampered pets in air-conditioned living rooms and the friendly mixed-breed pothounds that follow children to school. The climate that makes life easy for people also suits parasites and diseases that are rare in cooler countries. Ticks, heartworm and the diseases they carry are among the most common reasons dogs fall ill here, and many cases are preventable with a simple routine.
Research from St George's University's School of Veterinary Medicine has found that Grenadian dogs are frequently exposed to tick-borne Ehrlichia, and a study of stray dogs across the six parishes found heartworm in more than a quarter of them. This piece covers the main health risks, the prevention routine that vets commonly recommend, how to cope with heat, and how to find veterinary care on the island.
Ticks and tick fever
The brown dog tick thrives in warm climates and is common in Grenada year-round. Ticks attach to dogs, feed on blood and can transmit diseases, most importantly ehrlichiosis, often called tick fever. Ehrlichia infection can cause fever, lethargy, loss of appetite, weight loss, bleeding from the nose, pale gums and swollen lymph nodes. Some dogs carry the infection with no obvious signs for long periods, then become ill later. Another tick-borne parasite, Babesia, and the bacteria Anaplasma also occur in the region.
Prevention centres on keeping ticks off. Vets in Grenada commonly recommend regular tick control using products such as spot-on treatments, chewable tablets or collars, used consistently all year. Check your dog for ticks every day or two, especially around the ears, between the toes, under the collar and in the armpits. Remove ticks with fine tweezers or a tick hook, gripping close to the skin and pulling steadily. Ticks also infest yards and kennels, so cleaning bedding and treating sleeping areas helps. If your dog shows signs of tick fever, see a vet promptly; it is treatable with antibiotics, especially when caught early.
Heartworm: the silent risk
Heartworm is spread by mosquitoes, which are abundant in Grenada. When an infected mosquito bites a dog, it transmits larvae that grow into long worms living in the heart and blood vessels of the lungs. Signs develop slowly and include coughing, tiring easily, weight loss and eventually heart failure. By the time symptoms appear, the disease is often advanced and treatment is long, expensive and carries risks. A study of 523 stray dogs from all six parishes of mainland Grenada found heartworm in about 27 per cent, and a survey of dog owners found many were unaware of the disease or how to prevent it.
The good news is that heartworm is almost entirely preventable. Monthly preventive medicines, given as tablets, chews or spot-on treatments, kill larvae before they develop. Some products combine heartworm prevention with tick and flea control. Vets usually recommend a blood test before starting prevention in adult dogs, because giving preventive medicine to a dog that already has adult worms can cause problems. Ask your vet which product suits your dog and budget, and give it on the same date every month.
Vaccinations and rabies
Core vaccinations protect against serious diseases that still occur in Grenada's dog population, particularly among unvaccinated and stray dogs.
- Rabies. Grenada is one of the few Caribbean islands where rabies is present in wildlife, carried by the mongoose. There have been no human cases in decades, thanks in part to vaccination of domestic animals. The Veterinary and Livestock Division of the Ministry of Agriculture runs an anti-rabies vaccination programme, and private vets also vaccinate. Keep your dog's rabies vaccination current.
- Distemper and parvovirus. These viral diseases are serious and often fatal in puppies. Puppies need a series of vaccinations, followed by boosters.
- Leptospirosis. Spread through the urine of rats and other animals, especially after heavy rain and flooding. It can affect people too. Ask your vet whether vaccination is advised for your dog.
- Mongoose encounters. If your dog fights with or kills a mongoose, or you see a mongoose behaving strangely or appearing tame in daylight, contact a vet and the Veterinary Division promptly.
- Bites to people. If anyone is bitten by an animal, wash the wound thoroughly with soap and water and seek medical advice the same day.
Heat, water and everyday care
Shade all day. Dogs kept in yards need shade that moves with the sun, not just a patch that is shaded in the morning. A raised kennel with ventilation, under a tree or roof overhang, keeps dogs cooler.
Fresh water. Water bowls in the sun heat up and grow algae. Provide several bowls in the shade and refresh them daily. During NAWASA supply cuts, keep a dedicated container of water for pets.
Walk at the right time. Exercise dogs early in the morning or after sunset. Asphalt and concrete in midday sun can burn paws, and dogs overheat quickly in Grenada's humidity.
Watch for heatstroke. Heavy panting, drooling, weakness, vomiting and collapse are emergency signs. Move the dog to shade, wet it with cool water and get to a vet immediately. Short-nosed breeds and heavy-coated dogs are most at risk.
Never leave a dog in a car. Even with windows open, a parked car in Grenada heats up dangerously within minutes.
Grooming. Regular brushing removes loose hair and lets you check for ticks and skin problems. Fungal skin infections are common in humid weather; see a vet for persistent itching or hair loss.
Finding a vet and what care costs
Grenada has a number of private veterinary practices, mainly in and around St George's and the south of the island, and fewer in the rural parishes and on Carriacou. St George's University runs a small animal clinic that serves the public as a full-service general practice and teaching hospital, including after-hours emergency care. The Veterinary and Livestock Division of the Ministry of Agriculture handles rabies vaccination, livestock and animal health regulation. The Grenada Society for the Prevention of Cruelty to Animals, based at Lowther's Lane in St George's, has long offered low-cost care, but announced a temporary closure of its clinic and shelter from July 2026 because it had no vet; check its current status before relying on it.
Costs for consultations, vaccinations, tests and preventive medicines vary between practices and change over time, so ask for prices when booking. Monthly prevention and routine vaccinations cost much less than treating advanced heartworm or severe tick fever. Ask your vet about payment options for larger treatments, and consider setting aside a small amount each month for pet care. On Carriacou, veterinary services are more limited, so plan routine care and supplies of preventive medicine ahead.
Common mistakes owners make
Skipping prevention in the dry season. Ticks and mosquitoes are present all year in Grenada. Missing months leaves gaps in protection.
Waiting for symptoms. Heartworm and tick fever can be advanced before signs are obvious. Regular checks and annual tests catch problems early.
Leaving dogs chained in the sun. Chained dogs without shade or water suffer badly in the heat and are more likely to become aggressive.
Feeding cooked bones and scraps. Cooked chicken and fish bones can splinter and cause serious injury. Salty, spicy and fatty leftovers upset stomachs.
Buying cheap parasite products of unknown origin. Preventive medicines sold without advice may be the wrong dose, expired or unsuitable. Buy through a vet or a reputable pharmacy and follow the weight bands exactly.
Using poisons in the yard. Rat poison and some garden chemicals are a leading cause of pet poisoning. If you must use them, place them where dogs cannot reach, and know the signs of poisoning.
Food, weight and the golden years
Commercial dog food is widely sold in Grenadian supermarkets, pet stores and agricultural supply shops, mostly imported from the United States and Trinidad, and prices have risen with shipping costs. A good quality dry food, measured to the dog's weight and activity, is the simplest way to provide balanced nutrition. Many owners mix in cooked rice, provisions or plain fish or chicken without bones or seasoning, which is fine in moderation. Avoid onions, garlic, grapes, chocolate and very salty food.
Overweight dogs suffer more in the heat and develop joint and heart problems sooner, so feel for the ribs: you should be able to find them easily under a thin layer of fat. As dogs age, from around seven or eight years, regular vet checks become more important. Older dogs may need softer food, dental care, joint support and more shade and rest in the hot months. Many pothounds live long, healthy lives with modest care, and the habits that keep a young dog healthy pay off in its later years.
Frequently asked questions
Is heartworm common in Grenada?
Yes. A study of stray dogs across all six parishes of mainland Grenada found heartworm in more than a quarter of those examined. Mosquitoes spread it year-round, so monthly preventive medicine is strongly recommended for pet dogs.
What are the signs of tick fever in dogs?
Common signs include fever, tiredness, loss of appetite, weight loss, pale gums, nosebleeds and swollen glands. Some dogs show few signs for a long time. See a vet if you notice these, particularly if your dog has had ticks.
Is rabies present in Grenada?
Rabies exists in Grenada's mongoose population, although there have been no human cases for decades. Keep pets vaccinated through a private vet or the Veterinary and Livestock Division programme, and seek medical advice after any animal bite.
Where can a dog be seen in an emergency?
Several private vets offer emergency care, and St George's University's small animal clinic provides after-hours emergency services. Save the details of your nearest options before you need them, since emergencies often happen at night or weekends.
How can a dog be kept cool in Grenada's heat?
Provide shade throughout the day, plenty of fresh water, a ventilated resting place and walks only in the cooler early morning and evening. Never leave a dog in a parked car, and watch closely for signs of heatstroke.
