Is chocolate poisonous to dogs and cats?
Chocolate related poisonings is one of the most common poisonings seen in veterinary clinics, especially around the holidays. The lethal ingredient, theobromine, is 10 times stronger in baking chocolate than it is in milk chocolate. Since the effects of chocolate poisoning are heart arrhythmias and may not be apparent right away, it is important you contact your veterinarian or emergency clinic right away.