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 info@provet.co.uk 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

• Cleft palate
• Oropharyngeal neoplasia

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

• Factor X deficiency
• Haemophilia B (Factor IX deficiency or Christmas disease)
• Immune-mediated haemolytic anaemia
• Immune-mediated thrombocytopenia
• Platelet storage-pool deficiency (American)

Cancer

• 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

Heart valve disorders

• Atrioventricular valve endocardiosis
• Pulmonic stenosis

Abnormal development of major blood vessels to the heart

• Patent ductus arteriosus

Heart muscle disease

• Dilated cardiomyopathy
• Immune-mediated cardiomyopathy (1 colony)

Other Heart disease

• Sick sinus syndrome

Diseases of the eyeball

• Glaucoma  (goniodysgenesis) 
• Lacrimal punctal aplasia
• Limbal melanoma
• Multiple ocular defects (English)

Diseases of the eyelids

• Distichiasis 
• Entropion
• Ectropion
• Trichiasis (English)

Diseases of the third eyelid (nictitating membrane)

Diseases of the cornea

• Corneal dystrophy (American)
• Refractory corneal ulcer (American)
• Keratoconjunctivitis sicca (dry eye) 

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

• Hypothyroidism

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

• Deafness (Juvenile)
• Epilepsy
• Facial Paralysis (idiopathic)
• Lysosomal storage disease (ceroid lipofuscinosis)
• Multisystem neuronal degeneration
• Vestibular disease (English)

Orthopaedic diseases

• Brachyury
• Chondrodysplasia
• Cranial cruciate ligament rupture (American)
• Elbow luxation (congenital)
• Foramen magnum dysplasia
• Incomplete ossification humeral condyle
• Intervertebral disc disease
• Osteochondritis Dissecans (OCD)
• Patella dislocation (luxation)
• Prognathia (American) (Recessive trait)
• Spondylosis deformans (American)
• Temperomandibular dysplasia

Reproductive disorders

• Penile hypoplasia
• XX sex reversal

Respiratory diseases

• Bronchiectasis (American)
• Spontaneous thymic haemorrhage

Skin diseases

• Atopy (allergy)
• Basal cell tumours
• Black hair follicular dysplasia (American)
• Cryptococcosis
• Food hypersensitivty
• Hypotrichosis (congenital American)
• Intertrigo
• Melanoma
• Onchodystrophy
• Otitis externa
• Perianal gland neoplasia
• Sebaceous adenitis (reported)
• Seborrhoea (idiopathic)
• Skin tumours
• Tail-dock neuroma
• Vitamin A - responsive dermatosis

Other diseases

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