This Halloween, pet owners partaking in frightening family fun should remember to keep all their little ghouls and goblins safe — including the four-legged ones. Tricks for treats? Only if those treats are safe for pets, since many Halloween candies can be toxic to animals. Chocolate and sugar-free candies containing the artificial sweetener xylitol can be particularly dangerous if ingested, so keep your pet from sniffing around the candy bowl. With trick-or-treaters roaming the streets, pets can become disoriented and scared.