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English
Bulldogs belong to a group of dogs know as "brachiocephalic" breeds
or "short-nosed" breeds. Since dogs do not sweat to cool
themselves as people do they rely on panting to help expel excess
heat. The short nosed breeds cooling mechanism and air
transfer is much less than other breeds making them very prone to
over heating, heat exhaustion, and heat stroke.
Temperament
can also play a role in over heating. The very excitable
Bulldog, or the under socialized Bulldog that gets nervous or
"worked-up" is at a higher risk for breathing
problems. Through excessive panting or barking Bulldogs
can actually cause edema (swelling) to their throats and larynx
causing severe respiratory distress. Start early with your
puppy to get them used to different types of situations involving
crowds, children, multiple dogs, veterinary hospitals, dog shows,
etc. so they accept these as a normal part of their
life. Many "old time" Bull dog breeders carry lemon
juice to squirt in their dog's mouth to help clear their
throats. Lemon juice is actually considered a mucolytic and is
excellent at clearing mucus- so this might be worth a try if
your pet has problems.
In certain
individual Bulldogs the breathing problems are more pronounced and
is known as "Brachiocephalic
Syndrome." The first component of this
is pinched nostrils (stenotic
nares). The openings to the nostrils in
these dogs can be no more than slits. Air sounds can
frequently be heard with each breath. If you pinch your own
nostrils and try to take a deep breath you will experience a feeling
of negative pressure down near your larynx or voice box. This
negative pressure does several things. It stretches or pulls
on the soft palate which is the soft tissue just behind the
hard palate (hard roof of the mouth). This condition is known
as an elongated soft
palate. These dogs will make excessive snorting or
snoring noises. Often you can feel strong vibrations when
lightly cupping your hand over the underside of their
necks. Sometimes too, they will regularly spit up white
frothy foam that becomes trapped in their throats. Pinched
nostrils and elongated soft palates often go together and can only
be helped by surgery. The nostrils can be opened with a "wedge
resection" to remove tissue and create a wider opening. This
can be done with very little scarring and the sooner it is performed
on puppies the better. The soft palate is best shortened using
a C02 laser. Lasers cause less swelling, bleeding, and pain
allowing the pet to be discharged the same day. The
benefits of these surgeries can be dramatic,
and are greater in younger animals as compared to a dog
that has been having problems for several years.
The photo
to the left shows a bulldog undergoing stenotic nares correction
with surgery. Notice how much more open the nostril on
the left is compared to the nostril on the
right.
Two other
components of the syndrome are everted laryngeal
saccules and a hypoplastic trachea. The saccules are
located down within the openings of the trachea or windpipe.
The negative pressure formed higher in the airways causes a sac
on either side to get sucked out into the airway with every
breath. These appear almost as little balloons and further
occlude the airflow. These dogs are usually the ones that have
had ongoing problems left untreated. They tend to have trouble
breathing with the least amount of activity or excitement. The
saccules should be excised (cut out) to correct
the condition. The last feature of the syndrome known as
hypoplastic trachea simply means a very small trachea. Nearly
all Bulldogs have a smaller diameter trachea (windpipe) than other
dogs. The hypoplastic trachea is excessively
narrowed even to the point of collapsing.
It is often no wider in diameter than a pencil
in a full grown dog. This creates the problem of
creating additional negative pressure from the trachea making
dogs more prone to aspiration (inhaling food into the lungs).
Aspiration then causes pneumonia which the smaller trachea then
makes more difficult to clear. No specific treatment exists for
hypoplastic tracheas. All of these conditions are
complicated by a dog that is too heavy! DON'T LET YOUR DOG GET
TOO HEAVY.
Eye
Conditions
Bulldogs
are are prone to several eye conditions. The
most common is known as "cherry
eye" or more properly called prolapse of the gland
of the nictitans. This appears as a red, swollen mass appearing
out of the inside corner of the eye. The function of this
gland is to make tear fluid. The correct method for repairing
this problem is to replace the gland back to its proper
position.
Keratitis Sicca, also known as "dry eye",
results from not enough tear fluid production. A dry eye often
becomes infected and develops a black pigment across the cornea and
can result in blindness if left untreated. Cyclosporine drops
is the most commonly prescribed
treatment. Opthalmologists believe that an increase in
dry eye occurs when cherry eyes are cut out instead of
repaired.
Entropion/ Ectropion is the rolling in/ rolling
out of the upper and lower eyelids. This is commonly an
inherited problem. The result is that hairs rub on the
eyes and cause irritation resulting in corneal ulcers
(scratches). These are best repaired surgically to correct the
respective problem.
Ectopic cilia/Dystichia are hairs that grow out
from along the eyelid margins or from within the conjunctiva of
the eye. These can cause irritation and corneal
ulcers. These can be treated either with cryosurgery or
laser surgery. It is not uncommon to need several treatments
to resolve the problem.
Joint
Conditions
Bulldog's hip xrays will
never win any awards for conformation. What would be
considered "awful" hips on almost any other breed will be acceptable
on a bulldog. Occasionally, we do run into a bulldog whose
hips are without acetabulums (sockets) and these dogs do show
clinical problems. Luxating patellas (knee caps) are
also seen with the breed. This can be the slipping of the
knee cap either to the medial (inside) or lateral (outside) of the
normal groove. Bulldogs can also tear their anterior cruciate ligaments (ACL's). A
full tear will generally require surgery while many Bulldogs
with partial tears seem to do well with rest.
Hemivertebrae are much less common and usually
found as an incidental finding on xrays. Hemivertebrae
are vertebrae that are shaped more like triangles than
blocks. A more serious problem known as spina bifida involves deformities to the caudal
aspect of the spinal column. The significance of these lesions
can be from mild to severe.
Ingrown or
corkscrew tails can become a serious
problem. The tail grows backwards and down creating a deep
crevice that can become painful and infected. In severe cases
the tails need amputated. Milder cases require attention to
keeping the area clean and dry to maintain the pet's
comfort.
Skin
Conditions
The most common concern to Bulldog owners is keeping the face
wrinkles clean and dry. Many people have success with baby
wipes, corn starch powder, neo-predef powder, or if a yeast
infection exists malaseb pledgets. The staining seen in the
white face is many times caused by the iron in the tear fluid.
For adult dogs tetracycline binds up the iron and helps temporarily
for severe staining. This is NOT for use in puppies and will
damage their teeth.
Another
disorder seen in Bulldogs is the loss of hair on each side over the
flanks. While hypothyroid (low thyroid) should be ruled out
with a blood test, what we see more commonly is known as
seasonal flank alopecia. This is the loss of hair over the
flanks usually associated with winter and shorter
daylight. Biopsy can confirm this and the condition is not
serious and usually self limiting. Some have seen results
giving 6 mg of melatonin orally each day.
The ears are
part of the skin, so make sure to keep them clean and free of
yeast. This is not unique to Bulldogs but is very
important to their health.
Heart
Defects
Most severe murmurs can be heard at 6 weeks of age.
These can include ventricular septal defects, pulmonic stenosis,
aortic stenosis, and valve problems. Some mild murmurs are
"innocent" and go away as the puppy grows. Any murmur heard
can be better diagnosed with a cardiac ultrasound usually performed
by a veterinary cardiologist.
Breeding Bulldogs
So, after you have cleared your Bulldog of every
condition
mentioned previously (does this dog exist?!) you can consider
breeding them. Most breeders of Bulldogs use artificial
insemination as opposed to natural mating. This prevents a
long "tie" which could result in overheating one or both of the
dogs. While pregnant watch closely for signs of excess water
retention. This can be picked up by ultrasound. Some
breeders also note a shiny purple appearance around the nipples as a
warning sign. Low sodium diets have helped anecdotally from
some of our breeders as well as prescribing hydrochlorthiazide
as a diuretic (see your vet). A condition exists called
"Anasarca" or Congenital Lethal Edema which results in puppies that
are swollen many times normal size and weight (nicknamed walrus
puppies). These puppies are too large to deliver and while
born alive, they seldom live more than several hours. The
cause is currently not known. Because of the increased risks
in delivery for Bulldogs, many breeders elect to have cesarean
sections. We have had excellent success using Propofol,
Isoflurane, IV fluids (0 .9 saline or 2.5 % dextrose) and
glycopyrrolate (does not cross blood brain barrier like
atropine). The most important factor for the puppies is
aspirating off excess fluid from the lungs with a bulb
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