Adult and Senile
Abnormal location of eyelashes on the margin of the eyelid
pressure in the globe which can damage the eye causing blindness.
Glaucoma in which a dark pigment is also present in the globe and
which apparently blocks the drainage angle.
Dislocation of the lens from its normal site behind the cornea (partial
or complete) causing pain and eventual blindness.
membranes: Failure of blood vessels in the anterior chamber to regress
normally; there may be impaired vision or blindness.
Atrophy: Degeneration of the retinal vision cells which progresses
placement of the eyelashes on the eyelid.
Degeneration of the cortex of the cerebellum leading to a staggering
gait; it may or may not progress.
Gravis: Severe muscle weakness may cause megaesophagus, fatigue and
collapse due to a failure of neuromuscular transmission of nerve impulses.
Deafness: Inability to hear; i.e., completely deaf, both ears
Deafness: Partial deafness; one ear affected.
commonly called fits; they recur generally closer together.
Accumulation of fluid in the brain causing severe pressure and degeneration
of the brain.
Lack of development of the brain causing incoordination.
Muscle cramps triggered by excitement or exercise; you may see a rabbit
shaking or trembling, particularly of the rear limbs.
Abnormality of the neck vertebrae causing rear leg ataxia which may
progress to paralysis.
b. Ceroid-Lipofuscinosis (ATP subunit C storage): Causes night blindness,
confusion, unpredictable aggressiveness, and ataxia late in the course
of the disease.
Causes visual impairment, confusion, erratic temperaments, and apparent
loss of memory for previously learned tasks.
Vestibular Disease: Causes loss of balance/incoordination, dog appears
to try to keep from falling.
HARD TISSUE DISEASES
(Appendicular): Lack of normal development of the skeleton, particularly
of the appendages (limbs); dwarfism.
Palate: A fissure in the roof of the mouth and upper lip, may be present
together or separately.
Abnormal formation of the body of the vertebra, can cause posterior
ataxia and paralysis. It causes the twisted tail in the screw tailed
Aseptic necrosis of the head and neck of the femur, causes rear leg
Upper jaw extends beyond the lower jaw.
Poor development of structures holding patella (knee cap) in place,
usually medial (inward) in small breeds.
of the Ulna: Ulna stops growing sooner than radius, causes wrists
to turn in and front feet to turn out.
Radius stops growing sooner than the ulna causing bowed front legs.
Lower jaw extends beyond the upper jaw.
Failure of development of the larynx (voice box) causing breathing
Improper formation of cartilaginous rings of the trachea causing mild
to severe breathing problems.
A small trachea due to improper development causes mild to severe
Absence of most if not all teeth.
Abnormally small opening between the stomach and the duodenum, prevents
food from passing and causes sharp projectile vomiting.
(Excessive): Excessively assertive or forceful with other dogs or
people, may attack or bite without reasonable provocation.
Disease: Reduced factor VIII in the blood resulting in a prolonged
bleeding time; may be mild, moderate, or severe and can cause death.
Abnormality of heart muscle may cause edema of the lung, weakness
at exercise and sudden death.
Arteriosus: Failure of the fetal vessel between the aorta and pulmonary
artery to close around the time of birth, causes heart murmurs, exercise
weakness, and may cause death.
Outpouching of skin in the area of the inguinal ring which may contain
viscera; a scrotal hernia is a type of inguinal hernia.
Outpouching of skin over belly button; may contain abdominal viscera,
and regress spontaneously.
Excessive sugar in the blood and urine due to a lack of insulin.
Deficiency: Lack of production of or inability to use growth hormone
Destruction of the thyroid gland due to an attack from the animal's
own immune system causes rough, scaly skin; hair loss; weight gain.
Absence of testicles due to retention in the abdomen or inguinal region,
may be one or both sided or may slide in and out of the scrotum.
Presence of gonadal tissue for both sexes due to the presence of a
full compliment of both male and female chromosomes.
Short or "High"
Toes. This is a developmental condition where the outside toes, usually
on one or both front feet, do not grow to normal length, giving the
appearance of being a "short" or "high" toe that
does not touch the ground when full the terrier is fully grown.
Absence of premolars
(one or more). Terrier is missing one or more pre-molars; does not
have full denture.