NEW YORK -- Halloween may be fun and games for humans, but all that candy can pose a risk to dogs and cats.

Chocolate, and the caffeine and theobromine it contains, can cause vomiting, diarrhea and other issues, depending on the size of the pet, the type of chocolate and how much is ingested.

Candy wrappers are another issue since dogs may chow down as is on any candy they discover, leading to bowel blockages. Other Halloween treats dangerous for pets are raisins and macadamia nuts.

Most pet bakeries and pet stores stock up on safe seasonal and Halloween-themed treats. Leasa Greer, manager of nutrition and regulatory affairs for Solid Gold, a line of natural, health-focused foods and treats for dogs and cats, said natural treats such as pumpkin rinds and apples may be just the thing to distract pets from the candy haul.