Genetics and magic!! Woohoo!!!
Genetics: Some wizards tried the experimental crossing of such well-known subjects as fruit flies and sweat peas. Unfortunately, they didn't quite grasp the fundamentals, and the resultant offspring -- a sort of green thing that buzzed -- led a short, sad life before being eaten by a passing vegetarian spider.
Now there's the inspiron for a doctor Moreau style N.P.C I wonder if I can find a park for him in Liverpool....