Per Jensen is professor of Ethology at Linkoping University in Sweden since 2002‎.‎ He obtained his PhD on the behaviour of pigs in 1983 at the Swedish University of Agricultural Sciences‎,‎ where he stayed as a researcher and professor until he moved to the present position‎.‎ He has conducted extensive research on the natural behaviour of pigs kept in large‎,‎ outdoor enclosures‎.‎ Since 1997‎,‎ his main research topic is behaviour genetics of domestication‎,‎ using chickens as study subjects‎.‎ He is the head of a research group in applied ethology‎,‎ with about ten people in total‎.‎ Per Jensen is also heavily involved in teaching of ethology and genetics on all levels‎,‎ from introductory courses‎,‎ via advanced level and masters courses to PhD‎-training‎.‎ For ten years‎,‎ he was a member ‎(‎and chairman‎)‎ of the Scientific Committee of Animal Welfare of the EU‎-commission‎,‎ and he is an editor‎-in‎-chief for Applied Animal Behaviour Science‎.‎ ‎.‎‎"‎