Tag Archives: Dogs

Chocolate: Dogs’ secret enemy

Chocolate being bad for you? How could that be, but it turns out that chocolate can be quite dangerous for you and man’s best friend, the dog. This could be bad news with Valentine Day’s coming up, but exactly how much of a danger is it?

Chocolate (picture taken by: Andre Karwath)
(Source: Wikipedia commons)

 

Chocolate is a very common treat due to their sweet and addicting taste. Chocolates can come in a variety of flavours but typically contains cocoa, produced from cocoa beans. This cocoa contains one ingredient that turns out to be very harmful to dogs yet typically fine to humans.

Researchers have shown that this one substance is the key factor to a chocolate’s potency. An alkaloid known as theobromine is the nemesis of dogs, but why exactly does it turn out to be toxic to your dog when it appears that your dog can eat almost anything? The reason is that Dogs and many other animals metabolize theobromine at a very slow rate.  As theobromine affects the central nervous system as well as the heart muscle, this inability to metabolize or break it down quickly can cause death. Humans are capable or metabolizing theobromine much more readily, thus the toxicity of theobromine doesn’t play as much of a factor, although it can still be dangerous if one engulfs roughly a gigantic amount of chocolate.

Dog at Vet Photo by: Ildar Sagdejev (Source: Wikipedia Commons)

 

The lethal dosage, the amount that someone can digest before it being fatal has been studied by researchers to determine how dangerous chocolate is to dogs. Studies have shown that the LD50, the point at which 50% of the subjects who go over this limit die, of theobromine is roughly 300 milligrams per kilogram. The amount of theobromine in chocolate also varies with type. White chocolate contains very little theobromine, a Kit-Kat contains only 49mg, while dark chocolate such as Scharffen Berger 82% Cacao Extra Dark Chocolate contains 1100 milligrams per bar. So a 20kg dog would be able to consume 6 bars before reaching the LD50 point.  While 6 bars might be a lot for a human, that isn’t much for a dog.

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So as long as you keep chocolate high in theobromine away from your dogs, everything should be fine. Typical levels of chocolate bars do not have exceedingly high levels of theobromine, but it is important to be aware of the dangers on certain days like Valentines and Christmas.

One other interesting tidbit is that theobromine doesn’t actually contain any bromine, isn’t science confusing at times?

-Jeffrey Chen