Cocoa mulch harmful to pets

Food, Fitness and how to keep them healthy.

Postby Marinepits » May 11th, 2006, 2:03 pm

Received this email today:

http://www.snopes.com/critters/crusader/cocoamulch.asp



Claim: Theobromine, a chemical found in cocoa mulch, can be harmful to pets.



Status: True.



Example: [Collected via e-mail, 2003]

Cocoa Mulch, which is sold by Home Depot, Foreman's Garden Supply and other Garden supply stores, contains a lethal ingredient called "Theobromine".



It is lethal to dogs and cats. It smells like chocolate and it really attracts dogs. They will ingest this stuff and die. Several deaths already occurred in the last 2-3 weeks. Just a word of caution — check what you are using in your gardens and be aware of what your gardeners are using in your gardens.



Theobromine is the ingredient that is used to make all chocolate — especially dark or baker's chocolate — which is toxic to dogs.



Cocoa bean shells contain potentially toxic quantities of theobromine, a xanthine compound similar in effects to caffeine and theophylline. A dog that ingested a lethal quantity of garden mulch made from cacao bean shells developed severe convulsions and died 17 hours later. Analysis of the stomach contents and the ingested cacao bean shells revealed the presence of lethal amounts of theobromine.


Origins: This warning about the potential danger to pets posed by cocoa mulch began appearing in our inbox in May 2003. Unlike the majority of scary alerts spread through the Internet, there is a good deal of truth to this one, although we haven't encountered any substantiated cases of pet deaths caused by ingestion of cocoa mulch.



Veterinarians have noted that cocoa mulch contains ingredients that could pose a health risk to dogs (and other pets that might be tempted to ingest it):

"Cocoa mulch is a risk, especially to dogs," said Dr. Larry Family of Aqueduct Animal Hospital.



Found in most home garden centers, cocoa mulch is known for its fine texture and the sweet smell the fresh mulch gives off.



But getting past the scent, Family says cocoa mulch can be dangerous if a dog starts eating it. It contains two key ingredients found in chocolate: theobromine and caffeine. Similar to eating chocolate, he says a dog that eats just a few ounces of cocoa mulch could starting having stomach problems and it could get worse if it eats more.



"As time goes on they might act restless, excited, it can produce tremors and seriously seizures," Family explained.



"Puppies are very curious animals. So they're going to be attracted to various things around the yard and [the effect of eating cocoa mulch] seems to be more severe in the small breeds, and it depends on the amount they actually ingest," Family said.



The American Society for the Prevention of Cruelty to Animals (ASPCA) confirms the potential effects of theobromine and caffeine on dogs:

Cocoa beans contain the stimulants caffeine and theobromine. Dogs are highly sensitive to these chemicals, called methylxanthines. In dogs, low doses of methylxanthine can cause mild gastrointestinal upset (vomiting, diarrhea, and/or abdominal pain); higher doses can cause rapid heart rate, muscle tremors, seizures, and death.



Eaten by a 50-pound dog, about 2 ounces of cocoa bean mulch may cause gastrointestinal upset; about 4.5 ounces, increased heart rate; about 5.3 ounces, seizures; and over 9 ounces, death. (In contrast, a 50-pound dog can eat up to about 7.5 ounces of milk chocolate without gastrointestinal upset and up to about a pound of milk chocolate without increased heart rate.)



According to tables we've examined, cocoa mulch contains 300-1200 mg. of theobromine per ounce, making cocoa mulch one of the strongest concentrations of theobromine your pet will encounter in any chocolate product.



Yet the question of the gravity of the risk presented by this type of gardening mulch remains a matter of debate. According to Hershey's:

It is true that studies have shown that 50% of the dogs that eat Cocoa Mulch can suffer physical harm to a variety of degrees (depending on each individual dog). However, 98% of all dogs won't eat it.



And some of those who vend cocoa mulch note that although they're aware of the pet warnings, they've never encountered a case of a dog's being sickened by the product:

"The weird thing is, it smells like a chocolate Pop Tart. That's the best way I can describe it. It really does have a chocolate scent to it," explained Shane Compton of Hewitt's Garden Center.



Compton says cocoa mulch is not that popular at his store, but says it has its regular customers who every now and then wonder about the rumors they hear and the effect it has on man's best friend.



"There's always stories on the Internet, but in the 30 years we've been here we've actually never heard of any body's dog getting sick," Compton said.

Rather than gamble their dogs won't be attracted or harmed by the mulch, responsible pet owners will probably prefer to choose another form of soil enhancement for their gardens, such as cedar-based products.



(Although Home Depot is named as a vendor of cocoa mulch in the example cited at the head of this page, the company told us in May 2006 that: "The Home Depot does not and will not sell mulch harmful to pets. The mulch sold by The Home Depot containing cocoa shells goes through several cleaning processes, including a high heat system in order to strip the cocoa fat from the shells without the use of any chemicals.")



The danger of canine theobromine poisoning does not begin and end with cocoa mulch, however: chocolate in any form poses substantial risks to some pets. This most beloved of foodstuffs contains theobromine and small amounts of caffeine, both of which can sicken and even kill cats and dogs.



Chocolate's toxicity to animals is directly related to three factors: the type of chocolate, the size of the animal, and the amount of chocolate ingested. Unsweetened baking chocolate presents the greatest danger to pets because it contains the highest amount of theobromine, approximately 390-450 mg. per ounce. White chocolate contains the least. As a general rule of thumb, one ounce of milk chocolate per pound of body weight can be lethal for dogs and cats. (Milk chocolate contains approximately 44-66 mg of theobromine per ounce.)



Theobromine affects the heart, central nervous system, and kidneys, causing nausea and vomiting, restlessness, diarrhea, muscle tremors, and increased urination. Cardiac arrhythmia and seizures are symptoms of more advanced poisoning. Other than induced vomiting, vets have no treatment or antidote for theobromine poisoning. Death can occur in 12 to 24 hours.



This type of poisoning is uncommon because it is rare that a dog, even a small dog, will eat enough chocolate to cause anything more than an upset stomach. Yet it can happen, especially if the animal gets into baking chocolate or powdered cocoa, two forms of the sweet particularly loaded with theobromine.



Do not feed chocolate to dogs or cats. If you keep a pet, do not leave chocolate lying about lest your critter help himself to it and in so doing poison himself. If your animal begins exhibiting signs of distress and you believe he might have gotten into some chocolate, call your veterinarian immediately. (It will help if you can supply information about the approximate weight of your critter, what sort of chocolate was ingested — white, milk, dark, cocoa powder, baking — and roughly how much.) But time is of the essence if such a poisoning has indeed taken place, so make the call right away.
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Postby katiek0417 » May 11th, 2006, 3:59 pm

Yeah, I had heard about that b/c Sacha ALWAYS ate mulch as a puppy...and she would be sneaky about it....luckily I don't have that type of mulch....
"Rumor has it, compulsion is evil."

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