Nicola Bates, Information Scientist, at the Veterinary PoisonsInformation Service (VPIS), advises...
Christmas food
hazards are:
Chocolate
Chocolate
contains theobromine, a chemical very similar to caffeine, which dogs do not
tolerate very well. The amount of theobromine depends on the quality and type
of chocolate. White chocolate contains very little and is generally not a risk
but even a relatively small amount of dark chocolate (which is very high in
theobromine) can cause agitation, hyperexcitability, tremors, convulsions and
problems with the heart. Dogs will
not unwrap chocolate and can eat a very large quantity. The wrappers are not
toxic but could cause obstruction of the gut. If there are dogs in the
household or are visiting over Christmas do not put any chocolate under or on
the Christmas tree.
Onions (and
garlic, leeks, shallots and chives)
Onions, garlic,
leeks, shallots and chives all belong to the Allium species of plants. They can cause toxicity even when
cooked. Initially there can be gastrointestinal signs with vomiting and
diarrhoea but the main effect is damage to red blood cells resulting in
anaemia.This may not be apparent for several days after ingestion. Foods to avoid at Christmas include
sage and onion stuffing.
Grapes and
dried fruits (currants, sultanas, raisins)
Grapes and
their dried products (currants, sultanas and raisins) are toxic to dogs. Ingestion of even a small
quantity can cause severe kidney failure. Don’t forget this will include food
items that contain dried fruits such as Christmas pudding, Christmas cake and
mince pies. Be aware that chocolate-coated raisins are available so there is
the additional risk of chocolate toxicity with these.
Xylitol (food
additive code E967)
Xylitol is a
naturally occurring, sugar-free sweetener and is frequently found in sugar-free
chewing gums and sweets, and some pharmaceuticals including nicotine
replacement chewing gums. Xylitol is extremely harmful to dogs and can cause
low blood sugar (hypoglycaemia) and liver damage.
Alcohol
Dogs may help
themselves to any alcohol left unattended including wine and liqueurs and it
can cause similar signs in them as it does in their owners when drunk in
excess. Dogs can become
wobbly and drowsy and in severe cases there is a risk of low body temperature,
low blood sugar and coma.
Bread dough
Uncooked bread
dough that has been left to prove can be hazardous to dogs. The dough expands
in the warm, moist stomach and this can result in bloating and obstruction. Also
the yeast produces alcohol and this can cause additional effects (see above).
Macadamia nuts
Macadamia nuts
can cause lethargy, increased body temperature, tremor, lameness and stiffness.
Be aware that chocolate-coated macadamia nuts are available so there is also a
risk of chocolate toxicity with these.
Leftovers
If there is any
food left over at Christmas, be careful to dispose of it promptly and
appropriately. Mouldy food (including yoghurt, bread and cheese)
can contain toxins produced by the mould that cause rapid onset convulsions in dogs.
**Ed’s note – the toxicity mechanism regarding
grapes/raisins and dogs is not fully understood by scientists. This means any
amount could be fatal to a dog of any size. The advice from the world’s top
scientists is NOT to give you dog any grapes, raisins, sultanas, or any
products containing them such as Christmas cake, pudding, and/or mince pies.
Even if dogs have been fine eating these products before, because the science
is not understood, it is not safe to say that these dogs will be ok with the
next grape they eat. Please avoid these foods to avoid tragedy this Christmas.
Although they may like to think otherwise, a dogs digestive system varies greatly to that of our own. Despite being highly adapted to eating certain foods, there are some that must be fed with great caution and others to be avoided completely.
ReplyDeleteChristmas is an exciting time for dogs, and, like us they love those extra treats over the festive period. However it is very easy to overfeed our pets and many people are unaware of the potential dangers that come with feeding dogs the wrong things. I have composed a list of foods that are to be avoided when giving your pooh a treat:
Chocolate:
As many are aware, feeding your dogs this treat is not good for their waist line, however it can lead to chocolate toxicity, also known as Theobromine poisoning. Theobromie is found in high quantities in coca powder and therefore the toxic level in dark chocolate is much higher than that of milk chocolate. Symptoms of this poisoning include: vomiting, restlessness, hyperactivity and convulsions.
Grapes:
This may come as a surprise to some people but grapes (and raisins) are actually bad for your dog. Grapes are linked to kidney failure in dogs and this can lead to a very unpleasant death. Signs that your dog has eaten grapes include: depression, vomiting, failure to drink or eat and dehydration.
Onions:
These contain Thiosulphate, which is highly toxic to dogs; this can damage the red blood cells which can cause them to burst. A decrease in these cells can lead to your dog becoming breathless, other signs include: weakness and vomiting.
Milk:
Dogs, like many other animals are actually lactose intolerant. This means that they don’t have sufficient amounts of an enzyme which breaks down a sugar found in milk, as after weaning, milk is no longer necessary in the diet. Symptoms include: discomfort, diarrhoea and bloating, although some dogs react more than others.
Macadamia nuts:
Although scientists are unsure of the exact reason, it has been found that these specific nuts can be highly toxic to dogs and can prove to be fatal. Signs include: vomiting, tremors and an inability to walk.