Roger Abrantes, PhD (Evolutionary Biology and Ethology) DHC DF MAPBC, born in Portugal in 1951, has lived most of his life in Denmark. 

He is the author to 17 books in English, German, Spanish, Danish, Swedish, Norwegian, Italian, and Czech, and innumerous articles on behavior. He is probably one of the most versatile ethologists in the world. His work ranges from lecturing at the Etologisk Institute, where he is the scientific director, to appearances as guest lecturer in universities world wide, popular talks, treatment of behavior problems, as well as teaching canine and human behavior to police officers. 

He has written popular books with sound advice to pet owners as well as theoretical scientific dissertations. He teaches ethology, anthropology, and epistemology (theory of knowledge), besides his practcal work with dogs and horses. He is a popular guest in TV and radio programs in his home country and in the US. His English books Dog Language–An Encyclopedia of Canine Behavior and The Evolution Of Canine Social Behavior became hits the moment they reached the US bookshelves. He lectures often in the US.

Roger Abrantes is especially known for his views on social behavior and its applications to the daily understanding of pet behavior; and for his no-nonsense working methods, a practical and thorough application of Ethology and Learning Theory, teaching the animal the new patterns patiently and efficiently step by step. His actual work involves research into the evolution of human behavior.

In 2002, he was appointed unanimously as President of the Association of Companion Animal Behavior Counselors with headquarters in New York City, USA. He is currently the scientific director of the Etologisk Institut in Denmark His actual work involves research into the evolution of human behavior.

Roger Abrantes is truly a citizen of the world. If you ask him where he lives, he will answer you 'Planet Earth' and there's something about it. He lives in Cambridge, UK, Lisbon, Portugal, New York, USA, Copenhagen, Denmark, and Ubon Ratchatani, Thailand. He speaks nine languages, English, Portuguese, French, Danish, and Swedish (fluently), Spanish, Italian, German, and Thai (less fluently). He is a keen sportsman, having raced cars for many years. He has also played roller hockey in the German Bundesliga where he was his team's first goal-keeper until a few years ago. Nowadays he runs 10 ks and when he's not working he dedicates himself to his two life-long passions: reading (everything) and listening to music (Blues, Rock, New-Age).

A curiosity: he is mentioned in a quotation dictionary for love and erotics with his quote 'Were spouses to receive the same loving care as dogs do in Denmark, divorce rates would fall dramatically.'

Roger Abrantes, PhD i Etologi og Evolutionær Biologi, er født i Portugal og har levet i Danmark siden 1971. Efter sine eksaminer i filosofi læste han biologi og etologi—hans PhD er i etologi og evolutionær biologi. Abrantes er forfatter til 17 bøger og utallige artikler om adfærd og videnskabsmodeller bag adfærdsteorier, og er nok en af de mest alsidige etologer i verden. Hans virke spænder fra daglige behandlinger af adfærdsproblemer hos dyr, samt undervisning af eleverne på Etologisk Institut, til videnskabsteoretiske forelæsninger på universiteter verden over.