aug 15, 1876 - Opposition to animal testing arises (Late 1876)
Though others had spoken out against animal testing in the past, the topic was directly brought to the surface in late 1867. More and more people were becoming informed of the harsh truths about animal testing and what was really being done This event caused opposition to animal testing in the United States. Great Britain passed the Cruelty to Animals Act in 1876.
Added to timeline:
CM Timeline Animal Testing Controversy