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DEATH
BY CHOCOLATE!
By
Jennifer Gower BVSc MRCVS
Whoever once said that two
dogs can be 'double trouble' knew what they were talking about!
Buddy and Lilly are 18-month-old Miniature Schnauzers.
According to their human family, they are often the definition of ‘trouble’
- particularly when home alone.
However, it didn't take this doggy duo long to learn that leading a life
of mischief doesn't always pay off.
While the rest of the family were out of the house, Buddy and Lilly
decided that if Lindt chocolates were good enough for their humans, then
they must be worth trying.

And nothing was going to get in their way – not the height of the
kitchen table, nor the foil wrappers of the chocolates themselves.
Buddy somehow managed to scramble from the floor to the chair and onto
the table - no doubt egged on by Lilly - normally the more sensible of
the two (and no doubt sensibly orchestrating the crime from the safety
of the floor!)
Ten minutes later, with all evidence consumed, foil and all, Buddy was
beginning to wish he hadn't been so greedy. He was suffering from the
early stages of chocolate toxicity (poisoning from chocolate).
Luckily for him, a family member returned and found him - just in time!
A frantic phone call to the local vet and they were told how to make
Buddy vomit before the chocolate could affect him too seriously.
However, not all dogs are as fortunate as Buddy.
In one case on record in the USA, Daisy, a 12 year old Golden Retriever,
managed to eat her way through an amazing 2.7kg of chocolate that her
owners had bought for the Easter holidays!
When her owners returned home, Daisy was nearly comatose (and it was
obvious she'd been vomiting). Her veterinarian started emergency
treatment, and after four days and nights of intensive care, Daisy
finally began to improve. She is, however, one very lucky dog – most
dogs that consume this amount of chocolate do not survive!
So why do dogs react so badly to chocolate when we humans can stuff
ourselves until our waistlines tell us to stop?
Chocolate contains Theobromine, a caffeine-like substance that
dogs simply can't handle. Dogs don't know this, they simply like the
taste…Theobromine, if consumed in large enough quantities, can pose a
serious health risk.
HOW
CAN YOU TELL?
How can you tell if your
dog might have a problem?
Dogs with chocolate poisoning can become extremely excitable, irritable
and restless.
Theobromine causes an increased heart rate that may also become
irregular. Affected dogs may develop vomiting and diarrhoea as well as
urinate much more frequently.

They may also show muscle tremors or tenseness.
Severe cases (like Daisy) are rare, but in a worst case scenario can
lead to depression, coma, convulsions, cardiac arrest and death.
It's just not worth the risk.
It is important to see your local vet immediately if you suspect your
dog could be suffering from chocolate poisoning. While there is no
specific antidote, affected dogs will require other medications to help
control the effects of the poisoning.
The toxic dose of Theobromine is about 100-150 mg/kg. This means that
different sized animals will react differently to the same amount of
chocolate. To complicate matters further, different types of chocolate
have different levels of Theobromine.
Milk chocolate
contains only 6-45mg/oz of Theobromine, while unsweetened cooking
chocolate contains around 350-400mg/oz, making it much
more dangerous. This means that 200g of cooking chocolate could be fatal
for a 25kg dog.
Unfortunately dogs aren’t put off by the bitter taste of cooking
chocolate, so a fatal dose can be very quickly consumed if this type of
chocolate is left lying around.
Whilst the occasional chocolate biscuit or small Easter egg is unlikely
to result in chocolate poisoning, it's not recommended that owners let
their dogs develop a taste for such treats. Once they have acquired a
taste for chocolate, many dogs (like Buddy) will go to great lengths to
get some - often eating it wrapper and all.
So think twice before leaving that irresistible chocolate around at
home, especially around the Easter holidays. Remember, even if you think
it is out of reach of canine paws, for the doggy chocoholics in your
household… where there’s a will there’s a way… unless we humans
outsmart them!
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