Chocolate contains theobromine and caffeine, which dogs cannot process the way people do. Dark chocolate, baking chocolate and cocoa powder are the most dangerous; milk chocolate is less potent but still risky in quantity. Signs usually appear within 6 to 12 hours and can last for days.
Dogs cool themselves mainly by panting, which stops working well in hot or humid weather. Heatstroke can begin within minutes in a parked car, on hot pavement, or during hard exercise on a warm day. Flat-faced breeds, seniors, puppies and overweight dogs are at highest risk.
Loving a pet doesn't mean having thousands of dollars in cash at a moment's notice. If your animal is unwell and cash is tight, the most important thing is not to panic or wait in silence — there are options and local resources available to help keep your pet and family together.