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The Cocker Spaniel
The following diseases are reported to occur more frequently in the Cocker Spaniel than in the general dog population. In some cases the disease either has, or is believed to have, a genetic, hereditary cause but many of the diseases listed here do not have a proven genetic basis.

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If you do not find the disease that you are looking for in this list the disorder may not have been added yet, or it may not have been reported to occur more frequently in this breed than in the dog population as a whole. Try to find it through the search button. If you still can not find what you are looking for  e-mail us at and we will make the information available as soon as possible.

Alimentary tract diseases
This section includes diseases that involve the mouth, oesophagus (gullet), stomach, small intestine (duodenum and ileum), large intestine (colon and rectum), liver and pancreas.

Diseases involving the mouth

Diseases affecting the gullet (oesophagus)

  • Cricopharyngeal achalasia

Diseases involving the pancreas

Diseases affecting the small intestine

Diseases affecting the large intestine

Behavioural Disorders

  • Rage aggression

Blood diseases


  • Anal sac adenocarcinoma
  • Basal cell tumours
  • Fibrosarcoma
  • Histiocytoma (cutaneous)
  • Lipoma
  • Limbal melanoma
  • Melanoma
  • Non-epitheliotropic lymphoma
  • Oral (gingival)
  • Oropharyngeal
  • Papilloma
  • Perianal gland neoplasia (adenoma)
  • Plasmacytoma (cutaneous)
  • Sebaceous gland tumours
  • Sweat gland tumour
  • Trichoblastoma
  • Trichoepithelioma

Cardiovascular diseases

Heart valve disorders

Abnormal development of major blood vessels to the heart

  • Patent ductus arteriosus

Heart muscle disease

Other Heart disease

  • Sick sinus syndrome

Eye diseases

Diseases of the eyeball
  • Glaucoma  (goniodysgenesis) 
  • Lacrimal punctal aplasia
  • Limbal melanoma
  • Multiple ocular defects (English)

Diseases of the eyelids

Diseases of the third eyelid (nictitating membrane)

Diseases of the cornea

Diseases of the lens

  • Primary hereditary Cataract
  • Lens luxation (English)

Diseases of the optic nerve

  • Neuronal ceroid lupofuscinosis
  • Optic nerve coloboma (American)

Diseases of the iris

  • Persistent pupillary membranes (English)

Diseases of the retina

  • Central progressive retinal atrophy (English)
  • Generalised progressive retinal atrophy
  • Retinal dysplasia (multifocal - American Cocker)

Hormonal diseases

Immune system diseases

  • Immune-mediated cardiomyopathy
  • Immune-mediated haemolytic anaemia
  • Immune-mediated thrombocytopenia

Kidney and Urinary tract diseases

  • Calcium phosphate urolithiasis
  • Familial renal disease (English - fibrin/fibrinogen deposition in glomeruli)
  • Struvite urolithiasis

Liver diseases

  • Alpha-1-antitrypsin-related hepatitis
  • Chronic hepatitis
  • Portosystemic shunts

Nervous system diseases

Orthopaedic diseases

Reproductive disorders

  • Penile hypoplasia
  • XX sex reversal

Respiratory diseases

  • Bronchiectasis (American)
  • Spontaneous thymic haemorrhage

Skin diseases

Other diseases

  • Anal sac disease
  • Coccidiomycosis (American)
  • Cryptococcosis (American)
  • Inguinal hernia
  • Scrotal hernia

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