Amatras Shetland Sheepdogs  are breeders dedicated to focusing on longevity, health, temperament, structure, brains and beauty. Shelties are added to the program with these qualities only and bred only to improve each trait through each successive generation.


Companion and conformation (show) shelties are guaranteed against genetic defects that render them unsuitable as a family companion for one year with a full money-back guarantee.

(Beyond one year of age, a five year guarantee is extended with offer of a replacement puppy.)

Amatras Shetland Sheepdogs work purposefully with Sheltie breeders that perpetuate longevity & health in their lineage.

The family lineages you find throughout this website represent some of the finest lineages that have been offered to us and to the Shetland Sheepdog breed.

Thus, our goal is to perpetuate the quality already established and continually strive for the betterment of the breed.  


  • Learn the basic principles behind Genetics. [Inactive at this time.]
  • An explanation of Modes of Inheritance. [Inactive at this time.]
  • A brief thought is presented regarding Nature vs. Nurture. [Inactive at this time.]


See the complete listing of Genetic Defects that plague the Shetland sheepdog, complete with sources.

For more information on specific defects, follow the links below:

  • Behavioral Disorders: Aggressiveness (excess), separation anxiety, shyness (excess)

  • Blood Disorders: Factor VIII Deficiency (Hemophilia 'A'), Factor IX Deficiency (Hemophilia 'B'), von Willebrand's Disease (vWD)

  • Cardiovascular Disorders: Cardiomyopathy, Dilated Cardiomyopathy (DCM), Patent Ductus Arteriosus (PDA), Portosystemic Shunt (extrahepatic), Ventricular Septal Defect (VSD)

  • Dentition Disorders: Abnormal Dentition, Misdirected Canine Syndrome (Lance Canines), Missing Teeth, Overshot/Undershot alignment of jaw/teeth

  • Endocrine Disorders: Hepatic Lipidosis, Hypercholesterolemia, Hypothyroidism (Autoimmune Thyroiditis, Hashimoto's Disease, Lymphocytic Thyroiditis)

  • Eye (Ocular) Disorders: Blepharophimosis (narrow palebral fissure), Cataracts, Central Progressive Retinal Atrophy (CPRA), Collie Eye Anomaly (CEA-Choroidal Hypoplasia, Optic Nerve/Disc Coloboma, Retinal Detachment, Retinal Hemorrhage, Staphylomo/Coloboma, Collie Scleral Ectasia Syndrome), Conjunctivitis, Corneal Dystrophy, Distichiasis (eyelashes), Ectopic (Aberrant) Cilia (Eyelashes), Entropion, Heterochromia Iris (wall eye), Imperforate Lacrimal Punctum (Epiphora), Keratoconjunctivitis Sicca (KSC-dry eye), Microphthalmia, Optic Nerve Hypoplasia, Persistent Pupillary Membrane (PPM), Progressive Retinal Atrophy (PRA), Retinal Dysplasia, Trichiasis (eyelashes), Trichomegaly, Uveodermatologic Syndrome

  • Gastrointestinal Disorders: Acute Hemorrhagic Enteropathy (Hemorrhagic Gastroenteritis), Canine Sprue, Megaesophagus (Esophageal Achalasia)

  • Immunological Disorders: Allergies, Discoid Lupus Erythematosus (DLE), Immune Mediated Polygenicarthritis, Rheumatoid Arthritis, Systemic Lupus Erythematosus, Vogt-Koyanagi-Harada-like syndrome

  • Musculoskeletal Disorders: Calcinosis Circumscripta, Canine Hip Dysplasia (CHD), Craniomandibular Osteopathy (CMO), Dwarfism (Osteochondrodysplasia, Chondrodysplasia, Achondrodysplasia, Pseudoachondrodysplasia, Primary Metabolic Skeletal Abnormality, Enchondrodystrophy), Elbow Dysplasia, Elbow Luxation, Legg-Calvé-Perthes Disease (LPD), Multiple Cartilaginous Exostoses (Enchondromatosis), Osteochondritis Dissecans (OCD), Patellar Luxation, Premature Closure of the Tibia/Ulna/Radius, Tarsal, Metatarsal & Intertarsal Joint Luxation, Shoulder Luxation, Superficial Digital Flexor Tendon Displacement, X-Linked Muscular Dystrophy

    Nervous System Disorders: Deafness, Epilepsy, Neuroaxonal Dystrophy (NAD), Vestibular Disease

  • Puppy Disorders: Cleft Lip/Palate, Hypoglycemia, Inguinal Hernia, Swimmer Puppies, Tail Abnormalities, Umbilical Hernia

  • Reproductive/Urinary Disorders: Cryptorchidism, Ectopic Ureters, Fanconi's Syndrome, Polygeniccystic Kidney, Pyometra, Renal Aplasia (Renal Agenesis), Urolithiasis, Uterine inertia (primary)

  • Respiratory Disorders: Tracheal Collapse, Tracheal Hypoplasia

  • Skin Disorders: Acral Lick Dermatitis, Acute Moist Dermatitis, Alopecic (Color Dilutio) Syndrome, Atopic Dermatitis, Bullous Pemphigold, Castration Responsive Dermatosis, Demodicosis (Demodectic Mange), Dermatomyositis (DM), Epidermolysis Bullosa (EB), Folliculitis, Nasal Solar Dermatitis, Pemphigus Foliaceus, Pemphigus Erythematosus, Seborrhea, Ulcerative (Idiopathic) Dermatosis, Vitiligo


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© Amatras Shetland Sheepdogs, Englewood, Florida. Established 2000.