A danger to dogs
Chocolate may be the 'food of the gods' for human-beings, but can be a serious danger to domestic animals – dogs, horses, kittens, parrots. They cannot accommodate the effects of theobromine and caffeine, and ingesting chocolate in anything like the quantities that humans eat it can cause severe reactions in the digestive and nervous system – and, on rare occasions, may even result in death.
For more on this, visit: http://www.avma.org/careforanimals