Tag Archives: Cardigan Welsh Corgi

The Retina and Optic Nerve

Tapetal coloration of the fundus of the puppy and kitten is usually gray or blue at 6 to 8 weeks of age, gradually acquiring its adult coloration by 4 to 7 months of age when the tapetum matures. Myelination of the optic disc may also be incomplete in the puppy and kitten, giving the impression of a small, well-defined nerve head that takes on a more fluffy appearance as adult myelination occurs.Both congenital and acquired disorders of the retina and optic nerve are recognized in the young dog and cat. These may be inherited, as with collie eye anomaly, or secondary to postnatal influences, as occurs with canine distemper-induced retinitis. Congenital abnormalities can be diagnosed as early as 6 weeks of age, when the posterior segment is clearly observed. The more common congenital abnormalities of the canine fundus are summarized in Table Congenital Abnormalities of the Canine Fundus. Acquired abnormalities develop with advancing age and in this discussion are limited to those in dogs and cats younger than 6 months of age. Table Congenital Abnormalities of the Canine Fundus (diagnosed as early as 6-8 wk of age). DISORDER BREED CHARACTERISTIC FEATURES Collie eye anomaly Collie, Shetland sheepdog, Read more […]

The faults and defects of the breeds: Herding Dogs

Australian Cattle Dogs OCD (osteochondrities dissecans) of the hock Australian Shepherds Hip dysplasia; Dwarfism; Spina bifida Bearded Collies Hip dysplasia Belgian Malinois Hip dysplasia Belgian Sheepdogs Hip dysplasia; Neoplaisa Belgian Tervurens Hip dysplasia; Thyroid disorders Border Collies OCD (osteochondrities dissecans); Hip dysplasia Bouviers des Flandres Elbow dysplasia; Hip dysplasia Briards Thyroid disorders; Hip dysplasia Cardigan Welsh Corgis Medial patella luxation Collies (Rough and Smooth) Dwarfism; Neoplasias German Shepherd Dogs Dwarfism; Panosteitis, shown as limb pain and intermittent lameness between the ages of 6 and 12 monts; Hip dysplasia; UAP (ununited anconeal process); Cartilagenous Exostosis; Pannus; Elbow dysplasia; Neoplasias; Thyroid disorders; OCD (osteochondrities dissecans); Degenerative myelopathy causes progressive hind limb paralysis in middle age to older dogs. Old English Sheepdogs Hip dysplasia; Wobblers syndrome Pembroke Welsh Corgis IVD (intervertebrate disk disease); Hip dysplasia; Swimmers syndrome Pulik Hip dysplasia Shetland Sheepdogs Hip dysplasia; Dwarfism; Thyroid disorders; Neoplasias; Muscular dystrophy Read more […]