January 5th, 2009
Why is chocolate poisonous to dogs? ?
Actually it depends on the dog. My toy poodle ate about 1/2 pound of milk chocolate one day when I was at work, and survived to tell the tale. Though she had been sick a number of times and drunk a lot of water, and when I got home, I made her get up and walk for about 10 minutes, though I did not know that chocolate was poisonous, then. I suspect that she may have inoculated herself against the effects because several years later she consumed another about 6 oz at one sitting, and was not even sick. Yes, I was careless, and it does horrify me that she could well have died because of it, but, at the time, I did not know that chocolate was toxic to dogs.
http://www.dogtopics.com/165/7-questions... - 35k
Apparently dogs have a bad reaction to this chemical. Large amounts can be deadly to dogs; small amounts can make them sick.
www. missouri scenic rivers .com/ bad dog foods .html
They explain and have a lot of information on this for you.
Toxic Levels
The good news is that it takes, on average, a fairly large amount of theobromine 100-150 mg/kg to cause a toxic reaction. Although there are variables to consider like the individual sensitivity, animal size and chocolate concentration.
On average,
Milk chocolate contains 44 mg of theobromine per oz.
Semisweet chocolate contains 150mg/oz.
Baker's chocolate 390mg/oz.
Using a dose of 100 mg/kg as the toxic dose it comes out roughly as:
1 ounce per 1 pound of body weight for Milk chocolate
1 ounce per 3 pounds of body weight for Semisweet chocolate
1 ounce per 9 pounds of body weight for Baker's chocolate.
So, for example, 2 oz. of Baker's chocolate can cause great risk to an 15 lb. dog. Yet, 2 oz. of Milk chocolate usually will only cause digestive problems.
Clinical Signs
Xanthines affect the nervous system, cardiovascular system and peripheral nerves. It has a diuretic effect as well. Clinical signs:
Hyper excitability
Hyper irritability
Increased heart rate
Restlessness
Increased urination
Muscle tremors
Vomiting
Diarrhea
Treatment
There is no specific antidote for this poisoning. And the half life of the toxin is 17.5 hours in dogs. Induce vomiting in the first 1-2 hours if the quantity is unknown. Administering activated charcoal may inhibit absorption of the toxin. An anticonvulsant might be indicated if neurological signs are present and needs to be controlled. Oxygen therapy, intravenous medications, and fluids might be needed to protect the heart.
Milk chocolate will often cause diarrhea 12-24 hours after ingestion. This should be treated symptomatically (fluids, etc..) to prevent dehydration.
If you suspect your pet has ingested chocolate contact your Vet immediately! They can help you determine the the proper treatment for your pet.
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