I'm taking a class this summer in Business Ethics and I just started chapter 1 of my textbook. It talks about the evolution of business ethics starting in the early 20th century.
One of the main issues in business ethics involves environmental protection. All the other issues cited either have to do with professional ethics or some sort of human condition. But nothing about animals. I'm guessing that animals are included in environmental protection, but really, the issue of animals is a separate issue than environmental protection. A lab can control its disposal of medical waste so as not to pollute streams while it's still testing its new cosmetic or drug on a rabbit's eyes.
And really, there are a lot of animal issues in the business world. Product testing on animals, products made from animal material, meat, eggs, dairy, fur, exotic pet trade, pet sales, pet supplies, veterinarian care, etc.
So, here's a another area of study that needs some prodding to address animal issues. I know they do it in medical ethics...now it should be business ethics.