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Science of Horses
Amita Sarkar
出版
DISCOVERY PUBLISHING HOUSE PVT Limited
, 2013-04
主題
Study Aids / General
ISBN
9350563002
9789350563007
URL
http://books.google.com.hk/books?id=nQXHrQEACAAJ&hl=&source=gbs_api
註釋
The horse is one of two extant subspecies of Equus ferus, or the wild horse. It is a single-hooved mammal belonging to the taxonomic family Equidae. The horse has evolved over the past 45 to 55 million years from a small multi-toed creature into the large, single-toed animal of today. Humans began to domesticate horses around 4000 BC, and their domestication is believed to have been widespread by 3000 BC. Horses in the subspecies caballus are domesticated, although some domesticated populations live in the wild as feral horses.