Small Animal Care & Management - Fourth Edition - 9

Chapter 1

Introduction to Small Animal Care

celled with very little internal structure). The difference between the two is the
characteristic of their cell walls.
The three domains proposed by Woese and many other scientists are:
1. Eukarya-this domain contains the present Kingdoms of Animalia,
Plantae, Protista, and Fungi. Organisms in this domain have a boundary that surrounds the nucleus, called a nuclear envelope. The nucleus
is a spherical structure that contains the genetic information. The cells
also contain a mitochondrion (the part of the cell that carries out the
chemical and physical processes that require oxygen).
2. Bacteria-contains only the Kingdom by the same name, Bacteria.
3. Archaea-contains only the Kingdom by the same name, Archaea.

DomeStication oF animaLS
Dogs are believed to be the first animals domesticated. There are two main
theories about how canine domestication occurred. Dogs may have evolved
from a canine ancestor similar to the pariah dogs that populate many
underdeveloped countries today. Pariah dogs are semi-feral dogs that live
in close approximation to towns, where they survive by scavenging on garbage. A feral animal is one that is wild or untamed. A semi-feral animal
would be one that isn't completely tamed. This theory holds that individual
pariah-type dogs that allow humans to get fairly close to them before they
flee will obtain more food and therefore reproduce more successfully than
will those dogs that run more readily from people. If the greater tolerance
to human presence is inherited, over time the canine ancestor could have
evolved into the domestic dog. Another popular idea is that dogs are domesticated wolves. In this theory, wolf pups were hand-raised by early
humans. These human-raised wolves would have alerted their owner to
danger by barking or perhaps would have assisted in hunting. Currently,
archeological evidence indicates that domestication of the dog occurred
about 14,000 years ago.
The cat's association with humans dates back to about 3,500 years ago.
Pictures of cats have been found in the Egyptian tombs. The domestic
cat probably provided pleasure and companionship, as well as controlled the
population of rats and mice.

the SmaLL-animaL inDUStrY
The recent global recession has had a far-reaching impact on the world
economy and it has even left its mark on the pet-owning public. There was
a 2.4 percent decrease in U.S. pet ownership from the year 2006 to 2011. Pet
ownership during 2011 showed that 56 percent of all American families,
about 66.5 million households, include at least one companion animals. See
Figures 1-5 and 1-6. Cats outnumber dogs as the most common household
pet; as of 2011, there were more than 74.1 million cats in the United States,
compared to 69.9 million dogs. Dogs are found in 36.5 percent of the nation's

9



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
Small Animal Care & Management - Fourth Edition - vi
Small Animal Care & Management - Fourth Edition - vii
Small Animal Care & Management - Fourth Edition - viii
Small Animal Care & Management - Fourth Edition - ix
Small Animal Care & Management - Fourth Edition - x
Small Animal Care & Management - Fourth Edition - xi
Small Animal Care & Management - Fourth Edition - xii
Small Animal Care & Management - Fourth Edition - xiii
Small Animal Care & Management - Fourth Edition - xiv
Small Animal Care & Management - Fourth Edition - xv
Small Animal Care & Management - Fourth Edition - xvi
Small Animal Care & Management - Fourth Edition - xvii
Small Animal Care & Management - Fourth Edition - xviii
Small Animal Care & Management - Fourth Edition - xix
Small Animal Care & Management - Fourth Edition - xx
Small Animal Care & Management - Fourth Edition - xxi
Small Animal Care & Management - Fourth Edition - xxii
Small Animal Care & Management - Fourth Edition - 1
Small Animal Care & Management - Fourth Edition - 2
Small Animal Care & Management - Fourth Edition - 3
Small Animal Care & Management - Fourth Edition - 4
Small Animal Care & Management - Fourth Edition - 5
Small Animal Care & Management - Fourth Edition - 6
Small Animal Care & Management - Fourth Edition - 7
Small Animal Care & Management - Fourth Edition - 8
Small Animal Care & Management - Fourth Edition - 9
Small Animal Care & Management - Fourth Edition - 10
Small Animal Care & Management - Fourth Edition - 11
Small Animal Care & Management - Fourth Edition - 12
Small Animal Care & Management - Fourth Edition - 13
Small Animal Care & Management - Fourth Edition - 14
Small Animal Care & Management - Fourth Edition - 15
Small Animal Care & Management - Fourth Edition - 16
Small Animal Care & Management - Fourth Edition - 17
Small Animal Care & Management - Fourth Edition - 18
Small Animal Care & Management - Fourth Edition - 19
Small Animal Care & Management - Fourth Edition - 20
Small Animal Care & Management - Fourth Edition - 21
Small Animal Care & Management - Fourth Edition - 22
Small Animal Care & Management - Fourth Edition - 23
Small Animal Care & Management - Fourth Edition - 24
Small Animal Care & Management - Fourth Edition - 25
Small Animal Care & Management - Fourth Edition - 26
Small Animal Care & Management - Fourth Edition - 27
Small Animal Care & Management - Fourth Edition - 28
Small Animal Care & Management - Fourth Edition - 29
Small Animal Care & Management - Fourth Edition - 30
Small Animal Care & Management - Fourth Edition - 31
Small Animal Care & Management - Fourth Edition - 32
Small Animal Care & Management - Fourth Edition - 33
Small Animal Care & Management - Fourth Edition - 34
Small Animal Care & Management - Fourth Edition - 35
Small Animal Care & Management - Fourth Edition - 36
Small Animal Care & Management - Fourth Edition - 37
Small Animal Care & Management - Fourth Edition - 38
Small Animal Care & Management - Fourth Edition - 39
Small Animal Care & Management - Fourth Edition - 40
Small Animal Care & Management - Fourth Edition - 41
Small Animal Care & Management - Fourth Edition - 42
Small Animal Care & Management - Fourth Edition - 43
Small Animal Care & Management - Fourth Edition - 44
Small Animal Care & Management - Fourth Edition - 45
Small Animal Care & Management - Fourth Edition - 46
Small Animal Care & Management - Fourth Edition - 47
Small Animal Care & Management - Fourth Edition - 48
Small Animal Care & Management - Fourth Edition - 49
Small Animal Care & Management - Fourth Edition - 50
Small Animal Care & Management - Fourth Edition - 51
Small Animal Care & Management - Fourth Edition - 52
Small Animal Care & Management - Fourth Edition - 53
Small Animal Care & Management - Fourth Edition - 54
Small Animal Care & Management - Fourth Edition - 55
Small Animal Care & Management - Fourth Edition - 56
Small Animal Care & Management - Fourth Edition - 57
Small Animal Care & Management - Fourth Edition - 58
Small Animal Care & Management - Fourth Edition - 59
Small Animal Care & Management - Fourth Edition - 60
Small Animal Care & Management - Fourth Edition - 61
Small Animal Care & Management - Fourth Edition - Cover4
http://www.nxtbook.com/nxtbooks/ngsp/autoservice5e
http://www.nxtbook.com/nxtbooks/ngsp/bodystructures13e
http://www.nxtbook.com/nxtbooks/ngsp/refrigerationactech8e
http://www.nxtbook.com/nxtbooks/ngsp/medterminology8e
http://www.nxtbook.com/nxtbooks/ngsp/naturalresources6e
http://www.nxtbook.com/nxtbooks/ngsp/heavydutytruck6e
http://www.nxtbook.com/nxtbooks/ngsp/sportsmedicine2017
http://www.nxtbook.com/nxtbooks/ngsp/agriculturalmechanics
http://www.nxtbook.com/nxtbooks/ngsp/introductoryhorticulture
http://www.nxtbook.com/nxtbooks/ngsp/basicrobotics
http://www.nxtbook.com/nxtbooks/ngsp/weldingprinciplesandapplications
http://www.nxtbook.com/nxtbooks/ngsp/delmars_electricity
http://www.nxtbook.com/nxtbooks/ngsp/modernlivestock_poultryproduction2016
http://www.nxtbook.com/nxtbooks/ngsp/introtoveterinaryscience_2016thirdedition
http://www.nxtbook.com/nxtbooks/ngsp/wildlifeandnaturalresourcemanagement_2016fourthedition
http://www.nxtbook.com/nxtbooks/ngsp/smallanimalcare_management_2016fourthedition
http://www.nxtbook.com/nxtbooks/ngsp/msoffice365_2016intro_illustrated
http://www.nxtbook.com/nxtbooks/ngsp/msoffice365_2016intermediate_illustrated
http://www.nxtbook.com/nxtbooks/ngsp/msoffice365_2016intermediate
http://www.nxtbook.com/nxtbooks/ngsp/msoffice365_2016intro
http://www.nxtbook.com/nxtbooks/ngsp/century21_10e
http://www.nxtbook.com/nxtbooks/ngsp/agriscience6
http://www.nxtbook.com/nxtbooks/ngsp/microsoftoffice2013_first
http://www.nxtbook.com/nxtbooks/ngsp/automotivetech6
http://www.nxtbook.com/nxtbooks/ngsp/dreamweaver_revealed
http://www.nxtbook.com/nxtbooks/ngsp/microsoftoffice2013_intro
http://www.nxtbookMEDIA.com