Guinea pig Cavia aperea f porcellus

The guinea pig is one of the few animals domesticated in the New World. It was a sacrificial animal and a pet for the local inhabitants. The wild guinea pig (C. aperea) may be the progenitor but some zoologists think the montane guinea pig (C. tschudii), which lives only in the mountainous areas of Peru, southern Bolivia, northwestern Argentina, and northern China, is the progenitor. The period of its domestication has not been determined exactly, but the remains of domestic guinea pig were discovered in deposits dating back to 3000 B.C. in the Peruvian Andes. The guinea pig became the most popular and the most often bred rodent. It is very easily tamed, almost never bites, and it is able to communicate very well.

Essentials of Human Physiology

Essentials of Human Physiology

This ebook provides an introductory explanation of the workings of the human body, with an effort to draw connections between the body systems and explain their interdependencies. A framework for the book is homeostasis and how the body maintains balance within each system. This is intended as a first introduction to physiology for a college-level course.

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