Introduction
Man has been dependent on the animals for its survival for food, companionship, and competition. Man has also used animals to gain knowledge about its surroundings. One of the earliest examples being that of physician Galen who used animals to demonstrate that blood flowed in arteries and not air. The man has come a long way from times of Galen and now, dogs, cats, monkeys, hamsters, rabbits, guinea pigs, and other animals are integral to the domain of scientific research. Research involves three distinct facets: acquiring knowledge, animals use in teaching exercises, and testing on animals of compounds, devices, or ...