As I asked, empty the Vivarium of all dogs and other test animals. We'll be using the area to contain bloodfly nests, exclusively, since my latest formula depends on ingredients collected from fresh bloodflies. Don't worry about exterminating the rats, since the bloodfiles will need carcasses for egg-laying.
As soon as I eliminate the undesirable side effects, we will give the people of Serkonos an elixir that is nothing short of miraculous, fortifying the mind, body and spirit.
Trust me, you will be proud to have been a part of our effort.