1. Suspected caffeine and ephedrine toxicosis resulting from ingestion of an herbal supplement containing guarana and ma huang in dogs: 47 cases (1997-1999);Ooms;J Am Vet Med Assoc,2001
2. Theobromine and caffeine content of chocolate products;Zoumas;J Food Sci,1980
3. Cacao bean shell poisoning in a dog;Drolet;J Am Vet Med Assoc,1984
4. Cacao bean mulch poisoning in dogs (abstract);Hovda;Vet Hum Toxicol,1994
5. Methylxanthines;Albretson,2004