ALAT Chapter 19: Rats

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Across
  1. 3. This euthanasia method is less commonly used in rats due to their larger size
  2. 5. Females reach puberty around ___ days old
  3. 10. ___ of the incisors is common
  4. 14. The scientific name of the most commonly used species of rat used in research
  5. 15. Rats, like mice, are normally fed and watered:
  6. 17. A common outbred rat stock; albino; long/narrow head and a tail about the same length of its body
  7. 20. Males reach puberty at around ___ days old
  8. 21. A common inbred rat strain; commonly used for immunological studies and diabetes research
  9. 22. Gestation normally lasts ___ days
  10. 24. A common outbred rat stock; albino; wide head, long ears, and a relatively short tail
Down
  1. 1. A common outbred rat stock; white with patches of black or brown; often called the hooded rat due to the fur on its head being pigmented
  2. 2. Like mice, rats do not ___ and therefore don't need to be fasted prior to anesthesia
  3. 4. The study of birth defects
  4. 5. Females have a postpartum estrus within ___ hours after parturition
  5. 6. The anogenital distance in the rat is about ___ as large in the male as the female
  6. 7. Rats, like mice, are most active at ___
  7. 8. Two mating methods are commonly used with rats: monogamous pairs and polygamous (___) mating
  8. 9. A technique that involves stroking the nape of the neck and abdomen of the rat; mimics the natural play behaviors of juvenile rats
  9. 11. Rats can be distinguished from mice by their larger size and their lack of a:
  10. 12. The female's estrous cycle lasts about ___ days
  11. 13. A common inbred rat strain; widely used for toxicology research and the study of birth defects; also used for cancer and aging research
  12. 16. Rats do not make large ___ like mice do; they prefer to hide in shelters
  13. 18. A red or reddish-brown substance that can sometimes be seen around the eyes and on the end of the nose; may be associated with conditions of pain or distress
  14. 19. Pups are generally weaned around ___ days of age
  15. 23. The AVMA Guidelines for the Euthanasia of Animals limits cervical dislocation to rats weighing less than ___ grams