The article describes the paradox that research on animals has led to a much greater understanding of animal empathy and feelings providing evidence that research on at least some animals should not be conducted.
Herzog, Harold, 2011. The Animal Research Paradox. 'Animals and Us,' Psychology Today, 12 December. https://www.psychologytoday.com/us/blog/animals-and-us/201112/the-animal-research-paradox