Ottawa Hiking Hazards for Dogs: What to Watch For

Ottawa is genuinely one of the best places in the country to hike with a dog. The Rideau Trail, Gatineau Park, the Greenbelt, the National Capital Greenbelt paths along the rivers… there’s something for every energy level, human and canine.

And then there are porcupines.

Beyond porcupines, Ottawa’s trail system comes with a reliable collection of hazards that send dogs to urgent care every summer. Here’s what to know before you head out.

1. Porcupines

This is the most Ottawa-specific hazard on the list, and it’s not a minor one. Porcupine encounters are common in the Greenbelt and Gatineau Park, and the dog is almost always the one who started it. Porcupines don’t throw quills. They press them in on contact, and each quill is barbed.

What you see on the surface is usually not the whole picture. Dogs that mouthed or bit the porcupine can have quills inside the mouth, in the tongue, and at the back of the throat — places you can’t easily see. And every attempt to pull quills in the field without proper technique can break them and drive the tip deeper.

If your dog gets quilled:
1. Keep them as calm as possible; excitement and pawing drive quills deeper.
2. Don’t try a full removal yourself. Come in. Sedation is usually required to do it properly, and any quills near or inside the mouth are particularly urgent.

2. Ticks

Gatineau Park and the Greenbelt are established blacklegged tick habitats, and tick season in Ottawa runs from roughly late March through November. If your dog hikes regularly, year-round tick prevention isn’t optional — it’s the baseline. After every trail outing, do a real check: ears, between the toes, groin, armpits, around the collar, at the base of the tail. Ticks in early life stages can be very small and easy to mistake for a speck of dirt.

Come in if you find an engorged tick, can’t remove it cleanly, or your dog develops fever or lameness in the weeks following a hike.

3. Hot trails and paw pad burns

Most people think of city pavement as a heat risk and assume trails are cooler. They’re not always. Exposed rock and gravel on ridge trails or open sections of Gatineau can get brutally hot in direct afternoon sun. Paw pads blister faster on hot rock than on asphalt in some conditions.

Plan hikes for early morning in peak summer, check paw pads before and after, and watch for a dog that starts limping, licking their feet excessively, or suddenly doesn’t want to walk.

4. Toxic plants

Wild parsnip is probably the most underappreciated hazard on Ottawa-area trails. It’s common along trail edges and riverbanks, and its sap causes chemical burns when exposed to sunlight on skin and on pet skin alike. It looks like Queen Anne’s lace and blooms in mid-summer. Don’t let your dog roll in dense vegetation along trail edges in July and August.

Water hemlock grows near streams and is one of the most toxic plants in North America. It causes seizures rapidly. Lily of the Valley, found in wooded areas, is highly toxic to dogs and especially to cats. Wild mushrooms after rain are another consideration along the Greenbelt paths; unless you can identify a species with certainty, redirect your dog away from them.

5. Dehydration on the trail

Dogs exercising in summer heat dehydrate significantly faster than their owners. A trail that feels comfortable for you might be genuinely taxing for a dog, especially in humidity. Bring more water than you think you’ll need. Offer it every 20 to 30 minutes on hot days, not just when your dog starts lagging. Don’t let them drink from stagnant water sources. Giardia and blue-green algae are both real risks.

Signs your dog needs to stop: panting beyond what the exercise warrants, slowing down significantly, gums that look dry rather than moist, ears flat, general reluctance to keep going.

6. Wildlife encounters beyond porcupines

Skunks are more common in the Greenbelt than most people expect. Spray in the eyes causes real irritation and should be flushed; if your dog was sprayed directly in the face, it’s worth having the eyes checked. Snapping turtles don’t go looking for trouble, but a dog that provokes a large one can get a serious bite. And if you’re hiking in rocky areas east of Ottawa toward the Canadian Shield, be aware that the Eastern Massasauga rattlesnake (Ontario’s only venomous snake) is occasionally encountered. A bite from one is always a vet visit.

7. Paw injuries and lacerations

Rocky terrain, broken glass at trailheads, sharp roots… Paw injuries happen. They bleed heavily and tend to reopen with every step. If you can’t get bleeding under control with firm pressure within ten minutes, or the wound looks deep or jagged, come in for proper cleaning and closure rather than trying to manage it at home.

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