Why aren't more contemporary ethicists doing work informed by the broader social-biological scope of animal behavior?

I may not be best positioned to address this question, since my own work in ethical theory is mostly not deeply informed by broader social-biological perspectives on animal behavior, but I'll have a try. The question seems to assume (a) that ethicists are not influenced by social-biological perspectives on animal behavior and (b) that they should be. But both assumptions may be open to question. Here, much may depend on what the questioner has in mind by social-biological perspectives and the way in which they might inform ethics. If this is a catch-all for any good work done in the natural and social sciences, then (a) might be doubted. At least, it would be overstated. While some ethicists pursue primarily internal questions about ethics conceived of as articulating principles that both subsume and explain common moral judgments and also provide reflectively acceptable guidance and criticism, others do work that is interdisciplinary in some way or other. For instance, there has been recent work...