Pros
Really nice people, made a lot of friends there, and lots of autonomy. A good place to develop as a scientist. Access to information is fairy open and you can forge your own path there if you want. Elanco actually does a very good job at manufacturing products, probably the best run part of the business.
Cons
Senior leadership needs complete overhaul. When asked, "what is it that Elanco can do better than anyone else", most employees would say "strategic acquisitions." But that's not the most important thing...developing and selling new products for animal health should be what Elanco is best at. Management is just adequate (at best), and to grow and improve, Elanco need excellent leadership and management. The poor management has led to multiple lay-offs, restructurings, re-orgs over the last 5 years, creating a huge amount of instability in the business and the lives of the people that work there.