Small Animal Care & Management - Fourth Edition - 13

Chapter 1

Introduction to Small Animal Care

between consignor and carrier, and from carrier to consignee; and (2) care
for animals delayed in transit. Animal care is a very large and rapidly growing industry. Pet care workers, zoo administrators, laboratory animal care
workers, small-animal breeders, animal trainers, animal groomers, veterinarians, veterinary technicians, and biologists will continue to be needed for
this important industry.

SUmmarY
Most of the small animals used as pets or in laboratories evolved during the
Paleocene and Eocene epochs of the Tertiary period 70 to 40 million years
ago. Modern birds evolved earlier during the Cretaceous and early Tertiary
periods.
The Cretaceous period, 135 to 70 million years ago, was the period of
the dinosaurs. After the demise of the dinosaurs, smaller reptiles evolved.
These small reptiles included snakes, lizards, and turtles, which could
compete with the large number of mammals that were also evolving.
The bony fish are the oldest vertebrate group. Some of them remain
virtually unchanged since their evolution during the Devonian period
between 405 and 345 million years ago.
Domestication of animals probably began with the dog about 14,000
years ago. As humans developed from being hunters to farmers, other animals were domesticated. Cats are thought to have been domesticated some
3,500 years ago. Domesticated animals include food, draft, and companion
animals.
Today, the pet industry is large and growing. Fully 56 percent of
American households have a companion animal. A large industry exists to
supply food, equipment, and health care for all of these animals. Millions of
other small animals, birds, reptiles, and fish are used in exhibitions and laboratories. Together, these industries provide jobs, careers, and opportunities
for a significant segment of our population.

review QUeStionS
1. According to scientific data, when did life on earth begin? Please support your response.
2. When did plants first appear on earth? How do we know this?
3. Why weren't plants the first form of life to appear on earth?
4. During which time period were dinosaurs most abundant?
5. During which time period did the placental mammals appear on
earth?
6. Which animals were first to be domesticated? Why?
7. What agency has responsibility for regulating the care and management of small animals?
8. Research and discuss the Linnaeus classification system and the Woese
system.

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Table of Contents for the Digital Edition of Small Animal Care & Management - Fourth Edition

Contents
Small Animal Care & Management - Fourth Edition - Cover1
Small Animal Care & Management - Fourth Edition - Cover2
Small Animal Care & Management - Fourth Edition - iii
Small Animal Care & Management - Fourth Edition - iv
Small Animal Care & Management - Fourth Edition - Contents
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