Wikipedia: Grape and raisin toxicity in dogs
- An article describing the cause, pathology, symptoms, diagnosis and treatment.
- http://en.wikipedia.org/wiki/Grape_and_raisin_toxicity_in_dogs

Chocolate Poisoning in Dogs
- Toxicity of various forms of chocolate and cacao, symptoms, and treatment advice.
- http://www.apogeecomgrp.com/drkevin/chocolate.html

Notes on Chocolate Toxicity in Dogs
- Explains why this product is poisonous.
- http://netpet.batw.net/articles/choc.tox.html

Dogs and Chocolate Toxicity
- Explains how much can be poisonous, as well as detailing signs of toxicity and available treatments.
- http://www.talktothevet.com/ARTICLES/DOGS/chocolatetoxic.HTM

Foods to Avoid in Dogs
- Certain common foods, even in low amounts, can be toxic to dogs. The signs of toxicity, emergency and veterinary treatment, and prognosis are described.
- http://www.peteducation.com/article.cfm?cls=2&cat=1661&articleid=1030