#10 Trick-or-treat candies are not for pets
All forms of chocolate - especially baking or dark chocolate - can be dangerous, and even lethal, for dogs and cats. Symptoms of chocolate poisoning may include vomiting, diarrhea, rapid breathing, increased heart rate, and seizures. Halloween candies containing the artificial sweetener xylitol can also be lethally poisonous to dogs. Even small amounts of xylitol can cause a sudden drop in blood sugar, subsequent loss of coordination, and seizures.