Rodney grew up in Zimbabwe and graduated from the Faculty of Veterinary Science of the University of Pretoria in South Africa in 1985. He practiced large animal medicine in Zimbabwe before coming to the USA in 1985. He did a small animal internship at the Animal Medical Center in Manhattan, NY, before he moved on to The Ohio State University for his residency in medical oncology in 1989. He achieved Board Certification in medical oncology in 1994, and in radiation oncology in 2000.
Rodney has developed oncology departments and provided consulting services, in various practices and laboratories, and has lectured throughout the United States and abroad on various oncologic topics. He has authored and co-authored a number of articles and other publications and conducted research on the phenomenon of multi-drug resistance, mast cell tumour and oral melanoma. He had been in private referral, medical and radiation, oncology practice in Southern California since 1993 until he returned to the UK in April 2019. He specializes in the application of multi-modality therapy protocols for the treatment of cancer in animals, with a patient and client directed approach.