Like his mentor, Bert Langerwerf, Drew has devoted most of his time keeping species that will thrive in outdoor enclosures in his native Arizona. His enclosures are producing some of the most amazing species from Africa and Europe including Leopard tortoises (Stigmochelys pardalis), Spurred tortoises (Centrochelys sulcata), and a variety of Testudo species including Testudo hermanni, Testudo floweri and Testudo marginata. Drew also keeps and breeds a handful of aquatic species and has recently produced a number of Vietnamese pond turtles (Mauremys annamensis), a species that is now extinct in nature.