The Vertebrate Pest Handbook: Questions & Answers on Rats & Mice, 3rd edition, is a revision of Dr. Austin Frishman's 2nd edition published in 1999. The revision retains his question and answer format but narrows the scope to commensal rodents, brown rats (aka. Norway rats), house mice, Peromyscus spp. and roof rats (aka. black rats). Pest control operators and wildlife control professionals looking to test their knowledge or have questions for in-house company training, will find this book a helpful addition. This book was revised to achieve several goals: • to serve as a handy reference for anyone engaged in vertebrate pest control without overwhelming readers with excessive detail, • to aid both Pest Management Professionals (PMPs), Wildlife Control Operators (WCOs) and people from the Board of Health in training new personnel, • to assist professionals in answering customer questions, • to compile a compendium of facts to guide one's working knowledge of commensal rodents, • to provide test questions for supervisors of PMPs and WCOs who wish to train new and experienced employees, and • to stimulate all to think before they undertake a commensal rodent control program.