SMALL ANIMAL CARE CHAPTER ONE INVERTEBRATES – VERTEBRATES - 370 million years DINOSAURS – 180 million years SMALL ANIMAL – 70 to 40 million years 420 million years Domestication of animals. Up to 12,000 years ago-dogs About 3,500 years ago-cats The Small Animal Industry 58.9% of all American families own pets. Cats now outnumber dogs as most common pet! Small Animal Industry cont. 3rd in popularity is Birds 4th is Rabbits 5th is Hamsters 6th is Fish Small Animal Industry $$$$ 10,500-11,000 retail pet stores= $21 billion in sales!! Vet. Expenditures of over $7 billion for dogs Almost $4 billion for cats And over $91 million for birds CLASSIFICATION OF ORGANISMS 5 KINGDOMS MONERA PROTISTA PLANT FUNGI ANIMALIA CLASSIFICATION OF ORGANISMS ALL AMIMALS WE WILL STUDY ARE IN PHYLUM CHORDATA! CHARACTERISTICS OF CHORDATA: NOTOCHORD DORSAL NERVE TUBE PHARYNEAL AREA REAR AREA TAIL CLASSIFICATION OF ORGANISMS CLASSES: MAMMALIA – FEED YOUNG MILK REPTILIA- SCALES OR BONY PLATES AVES- WINGS OSTEICHTHYES- LIVE IN WATER BINOMIAL NOMENCLATURE GENUS- 1ST WORD, CAPITAL LETTER SPECIES – 2ND WORD, LOWER CASE LETTER EXAMPLE: Canis familaria (dog)