Canine Genetic Disorders

15 Points Per Correct Answer - No time limit  

1. Only purebred dogs have problems with genetic disorders. True False

2. This disorder, found most often in the Bedlington terrier, is also known as Wilson's disease. Methemoglobinemia Goiter Iron deficiency Copper toxicosis

3. Found in many breeds, especially large ones, this is the most common inherited skeletal problem in dogs. Wobbler syndrome Legg-Perthe's disease Hip dysplasia Craniomandibular osteopathy

4. Found primarily in small breeds, but also in a few larger breeds such as the flat-coated retriever, this skeletal abnormality is also known as "slipping kneecaps." Patellar luxation Osteomyelitis Elbow dysplasia Panosteitis

5. This genetic abnormality is most common in white dogs. Deafness Dwarfism Blindness Polydactyly

6. Which of the following breeds does NOT have a high incidence of genetically-associated cancers? Beagle Bernese mountain dog Flat-coated retriever Boxer

7. This breed is subject to a genetic eye disorder that includes inadequate development of the blood vessels that nourish the retina, clefts in the optic disc, and retinal detachment. The effects on the dog range from no symptoms to blindness. Collie Poodle Golden retriever German shepherd

8. Perhaps the most common genetic eye defect in dogs has the acronym PRA. What does this stand for? Peripheral retinal ablation Progressive retinal atrophy Pupillary reflex anomaly Photo receptor anomaly

9. This is the most common inherited endocrine system disorder in large-breed dogs. Hypothyroidism Diabetes insipidus Pituitary dwarfism Hyperthyroidism

10. This inherited bleeding disorder is found in many breeds of dogs. Hemophilia Autoimmune hemolytic anemia Aplastic anemia von Willebrand's disease

11. This heart defect, most commonly seen in Newfoundlands and golden retrievers, can cause sudden death in an otherwise healthy dog. Aortic stenosis Sick sinus syndrome Mitral valve insufficiency Tricuspid dysplasia

12. This disorder, most commonly seen in the Doberman pinscher and Great Dane, causes weakness and incoordination of the legs, starting with the rear legs and gradually progressing to total paralysis. Cerebellar hypoplasia Fanconi syndrome Degenerative myelopathy Wobbler syndrome

13. We are all familiar with seeing tiny dogs- often white toy poodles or Maltese- that tremble continuously. Is this caused by a genetic disorder? Yes No

14. The most common inherited liver disorder in dogs is an abnormality of blood flow in the liver that leads to slow growth, neurological signs, vomiting, diarrhea and kidney stones. What is this disorder? Hepatic lipidosis Portosystemic shunt Chronic hepatitis Gastric volvulus

15. This disfiguring skin disorder affects Shetland sheepdogs and collies. The skin, especially on the face, tail tip, elbows, hips and toes, can be crusty, blistered and ulcerated, often resulting in permanent scarring. The underlying muscles can also be affected, causing atrophy. Vitiligo Acanthosis nigricans Dermatomyositis Sebaceous adenitis

16. What breed is subject to the most genetic disorders? Collie Golden retriever German shepherd Beagle

17. Now let's move on to how to prevent these disorders from occurring. First of all, is this a true statement?- If you wish to acquire a dog that is free of genetic disorders, then you are probably better off getting a purebred from someone who is just breeding one litter from their purebred but unregistered non-show dogs than from a breeder with show dogs, because the show dogs are likely to be inbred and have more problems. Yes No

18. Many pet stores sell puppies with guarantees against genetic disorders. These guarantees are helpful in ensuring a healthy pup. True False

19. One of the best ways to prevent genetic disorders is to screen the parent dogs to make sure that they are free of heritable problems. In the United States, one registry that records dogs free of specific diseases is the Orthopedic Foundation for Animals (OFA). For which disorders does OFA maintain databases of disease-free dogs? Hypothyroidism Hip dysplasia All of these Cardiac disorders

20. At what age will OFA certify a dog as being free of hip dysplasia? 1 year 3 years 6 months 2 years

21. What US organization tracks dogs that are free of hereditary eye defects? AVAR CERF OFA AVMA

22. What hereditary defect can be detected by BAER testing? Blindness Liver problems Cardiac defects Deafness

23. What defects are detected by use of a Holter monitor? Eye disorders Seizures Heart rhythm irregularities Bleeding disorders

24. When you are buying a dog just to be a pet, health testing is not important. True False

25. If you are planning on acquiring a purebred dog, which of the following should you do? Do research on what genetic conditions the breed may have Verify test results online Ask to see genetic test results of parents and pups All of these