Collie (Rough)
From Dog
The rough Collie is an English herding dog.
The breed stands between 51 - 61cm (20-24in) and weighs between 18 - 29.5kg. There are three main colours: sable and white, tri-colour (predominantly black and white with tan markings about the head and legs) and blue merle (clear silvery blue splashed with marbled black and tan markings).
The merle gene is a dominant, colour dilution gene and is responsible for defects and deaths if paired with another merle gene. Breeding merle to merle will have a lethal result for one quarter of the litter. Breeding merle to full colour will produce half merle and half full-coloured litters. Under no circumstances should merle dogs be bred with each other.
Disease predisposition
- Cutaneous histiocytosis
- Folliculitis
- Malassezia dermatitis
- Protothecosis
- Food allergy
- Pemphigus erythematosus
- Discoid lupus erythematosus
- Idiopathic ulcerative dermatosis
- Vitiligo
- Waardenburg-Klein syndrome
- Ivermectin sensitivity
- Gastric carcinoma
- Lymphocytic-plasmacytic colitis
- Exocrine pancreatic insufficiency
- Cyclic neutropenia
- Immune-mediated haemolytic anaemia
- Aspergillosis
- Elbow luxation
- Sebaceous adenoma
- Hemangiopericytoma
- Keratoacanthoma
- Vestibular disease
- Deafness
- Neuroaxonal dystrophy
- Entropion
- Distichiasis
- Corneal dystrophy
- Cataract
- Collie eye anomaly
- Retinal dysplasia
- Progressive retinal atrophy
- Ectopic ureter
- Urethral sphincter mechanism incompetence
- Hypospadias
