Ticks.
General. A big problem around the
Ferndown
area. The commenest type
seen is the ixodid tick which also feeds on cattle, sheep, deer, foxes,
rabbits, hedgehogs and just about anything else with blood - including
you!
Life cycle. The life cycle takes
several months. The tick you generally see is an engorged adult
female. These will eventually drop off and lay hundreds of eggs in
rough
vegetation. The eggs hatch into larvae or seed ticks which will feed
for several days on similar animals to the adult. After it has fed it
drops off and moults into the next stage. After a further period of
feeding it will moult into an adult and start the cycle all over again.
The problem. The main tick seasons are Spring and
Autumn
In Dkorset we see ticks attached to pets every month of the year. Ticks
often produce irritaion, skin inflammation and can
transmit disease such as Lymes disease in this country or Babesia in
mainland Europe. And I suppose most people find them pretty gross too!
What to do. There are a number of tick products
available
which will
kill ticks. Be warned though, that not all are equally effective and
even those that are, may take 24-48hours to kill the attached tick. We
can advise you on the best current options. For those of you who find
ticks attached the best option I have found is the Tom O'Hook remover
which is available from us.
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Fleas.
General. Itchy skin? think fleas. This by far and
away the commonest skin
complaint we see. Although worst in the warmer months we see it all
year round. The commenest flea seen is the cat flea although it by no
means restricts itself to cats or even animals!
Life cycle. Adult fleas spend their life on the animal
laying eggs
(about 30 per day) which drop to the floor. The larvae that hatch out
look like tiny maggots. They move into dark crevices
where they feed off debris especially flea faeces. After about a week
they spin little cocoons. Inside the coccon they are safe from most
attempts to kill them. They pupate to an adult flea over about 10
days. There they wait until a suitable host passes by and out they
spring to
take thier first meal of blood. Adult fleas only represent 5% of the
flea population in a home.
The problem. Fleas cause irritaion from thier bites and
movements both
to your pet and you! Some animals are allergic to thier bites and
develop severe skin disease out of all proportion to the number of
fleas
present. This is why one animal in a home may occasionally scratch
while
its companion is half bald with weeping sores. Fleas also transmit the
cat and dog tapeworm, dipylidium and, in rabbits myxomatosis.
What to do. We advise year round flea treatment
especially if you have
an animal who has flea allergy or any other skin disease that could be
made worse. Treat all animals in the house and, if you have a current
problem, treat the house as well. Contact us for our current
recommendations for flea products. Not all flea treatments and equal!
Take care some dog products can be
fatal if given to cats!
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Roundworms.
General.The commonest roundworm of dogs
and cats is toxacara. This is of public
health importance and is the reason regular worming is needed even if
you do not see any evidence of worms. Roundworm eggs are invisible to
the naked eye! If you are lucky/unlucky to see an adult worm it looks
like pale thin
spaghetti.
Life cycle. Adult worms live in the intestinal
tract of dogs and cats
were they lay thousands of eggs which pass out in the faeces. These
eggs remain infective for up to 2 years. They are spread widely by
wind,
rain, animal and human traffic. Ingested eggs hatch out and may migrate
through the lungs back to the gut to continue the cycle. They may
also migrate to other body tissues and remain dormant. In pregnant
bitches and queens these dormant larva migrate into the young via the
milk and in bitches into the pups before they are born. This is the
reason that worming of young animals is of such importance.
The
problem.
The commonest problems seen are in puppies and kittens with a general
failure to thrive and with heavy burdens, death. Signs
are rarely seen in adult animals but remember they are a source of
eggs. When ingested by people (especially children ) the wanderings of
the
worms can cause various syndromes including liver disease and sight
impairment. They have also been linked to an increased risk of allergic
disease and epilepsy in people.
What to do. Regular
worming will keep any problems at bay.
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Lungworm in dogs.
General. Angiostrongylus vasorum is the roundworm parasite that causes lungworm or French heartworm infection in the dog. It is thought to be increasing in incidence in many areas including Dorset. As with other roundworm infections, adult worms are not visible in the faeces and infection may go un-noticed in the early stages.
Life cycle. Angiostrongylus requires molluscs (slugs or snails) to complete its life cycle. Eggs laid by the adult worms are passed into the gut where they hatch out into larvae. These larvae are passed in the faeces and then infect slugs and snails. The worm undergoes further developement in the mollusc. Once the mollusc is eaten by a dog the larvae penetrate through the gut wall and migrate to the blood vessels in the lung. Here they mature and start laying eggs to complete the cycle.
The
problem.
As Angiostrongylus affects the lungs it comes as no surprise that it can cause breathing difficulties, coughing, reduced exercise tolerance, weakness and collapse. Lung disease can be severe enough to cause death. In addition to effects in the lung Angiostrongylus can also cause bleeding problems. These can be seen as ease of bruising, excessive bleeding from minor wounds, nose bleeds and abdominal(stomach) enlargement due to internal bleeding. Severe bleeding can occur in the absence of any breathing problems. Bleeding can lead to death.
What to do
Most dogs affected are young so we advise monthly worming with a product such as milbemax which is effective against Angiostrongylus.
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Tapeworms.
General.Tapeworms live in the gut of
dogs and cats like roundworms and you may
see the tell tale signs of 'rice grains' around thier bottom.
Life cycle. The adult worm lives in the gut with
its head firmly
imbedded in the gut wall. From this head a long string of segments
grow.
The oldest ones furthest from the head break off and it is these you
may see wriggling around your pets bottom. They contain the eggs. The
eggs have to be eaten by certain intermediaries dependent on the
particular type of tapeworm. This may be a rabbit, rodent, sheep or, in
the case of the commenest, a flea! In this host they develope into a
stage that is infective for the dog and cat again. The dog or cat then
eats the rodent or flea and the cycle starts again.
The problem. Heavy infestations may cause ill
health but most
infections only result in irritation around the bottom. They are not
transmissible to people.
What to do. Regular
worming will keep any problems at bay.
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Fox mange (sarcoptes, scabies).
General Fox mange is caused by a microscopic mite
called sarcoptes. As the name suggests it is seen in foxes as well as
dogs. It rarely affects cats. The Ferndown area has a high density of
foxes which in turn have a high incidence of mange. This puts your dog
at risk.
Life cycle The adult mites mate on the suface of
the skin after which the male soon dies. The female burrows into the
superficial layers of the skin feeding off tissue fluid that seeps into
the burrow. In there she lays eggs which hatch out into larva. The
larva feed in the tunnels and moult into nymphs and into then adults
that return to the skin surface to repeat the cycle. Mange mites are
very contagious and usually spread by direct animal to animal contact.
We frequently see cases in which no obvious direct contact with an
infected animal was seen.
The problem Sarcoptes or fox mange is an intensely
itchy condition resulting in an animal that has difficulty resting and
is constantly scratching. In the initial stages there may be little to
see but as the condition progresses we see hair loss, papules (small
bumps), inflammed skin and self inflected scratches to the skin. The
initial areas to be affected are often the ears, elbows and hocks.
eventually it will affect the whole animal. Although scabies in people
is caused by sarcoptes mites there is a species difference and the fox
mite does not survive well in people. If you are affected then treating
your dog usually resolves the problem. Diagnosing fox mange can be
difficult as the reactions are out of proportion to the number of mites
on the animal. Taking a scraping of the skin's surface may reveal mites
under the microscope confirming the diagnosis. As the scraping may fail
to find mites, even though present, if the suspicion is high then
treatment may be give without confirmation
What to do. We have very effective treatments for fox mange
in the form of specific spot on treatments eg Stronghold. These will be
dispensed if infection is confirmed or if there is a high index of
suspicion. There is sometimes an initial worsening of the skin disease
as the mites die.
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