The sheep chemist who created the Night Howler serum is Doug.
Doug is an emotionless ram working for Assistant Mayor Dawn Bellwether. Hidden in a laboratory, he processes Night Howler flowers into a serum that causes predators to become violently “savage.” He then uses a dart gun to inject the serum into targeted animals.
The Night Howler mystery is a deliberate misdirection. Judy initially assumes the name refers to wolves after hearing about the missing predators, but she later discovers that Night Howlers are actually flowers with powerful psychotropic effects. Duke Weaselton admits that Doug hired him to steal the flower bulbs.
Doug is sometimes confused with Duke Weaselton, who is the small-time thief, or with Bellwether, who masterminds the wider political conspiracy. Doug is the scientist and operative who manufactures the serum, while Bellwether uses the scheme to inflame fear of predators and seize power.