This source provides an in-depth history of animal experimentation during the 1900's and explains the benefits it has brought to society as well as the views of who oppose it because it is culturally unacceptable. The first recorded animal experimentation was for the study of body humors in the third century. These studies were used for medicine, blood circulation, and even the study of nerves, all of which occurred in periods like the Renaissance. Originally, research was conducted on animals because scientists believe they were incapable of feeling pain. By the nineteenth century, people began to consider the humane and civilized treatment of animals and conflict arose. A budget still exists for these experiment as the USDA does not cover
