Since 1989 departments of six Dutch universities cooperate to offer a yearly Postgraduate Education in Toxicology (P.E.T.) programme. In 2010 the co-operation was extended with two more universities (see below). The programme consists of courses of approximately one or two weeks each. The complete programme is such that it offers the participants the theoretical toxicological knowledge necessary for registration as a toxicologist, both with the Netherlands Society of Toxicology and with EUROTOX.