In the world of pharmaceutical development and becoming approved for clinical trials on humans, research involving animals remains critical in bringing game-changing drugs to real patients. Novo Nordisk has a very thorough animal ethics policy and it would be good for you to read through it on their website prior to your interview. Be ready to discuss the fact that you understand why animal testing is important and that you respect things like their animal welfare standards and their commitment to developing new technologies to replace the use of animal testing. If you will be in a role that is directly involved in animal testing, make sure to highlight how you will be up to Novo Nordisk's standards.