Dr Janssens received his Doctor in Veterinary medicine (Ghent State University - Belgium) in 1979. In 1986 he received Manager for small and middle sized enterprises (CMO Waasland - Belgium).
His veterinary association memberships include: 1987 - Founder and councillor of Small Animal Veterinary Association – Flanders; 1991-2002 Founder and president of Flemish Veterinary Association (VDV); 1992 – 2002 President of Belgian Veterinary Association (BSDV-USVB); 1991 - Belgian delegate for Federation of Veterinarians in Europe (FVE); 1991 - Belgian delegate for Union of European Veterinary Practitioners (UEVP); 1994 – 2003 Belgian delegate for Advisory Committee on Veterinary Training of the European Union (ACVT); 1996 – 2005 Councillor for Western Europe in World Veterinary Association (WVA); 1998 - Expert in Clinical Veterinary Sciences for the Faculty visitation system of European Association of Establisments for Veterinary Education (EAEVE); 2000 - Founder and councillor of Association for Good Veterinary Practice – Belgium (GVP); 2002 - Secretary General of Flemish Veterinary Association (VDV); 2003 Chairman of interim board of Federation of Veterinarians in Europe (FVE); 2008 – Councillor for Europe in world Veterinary Association.
Dr Janssens non professional activities and hobbies include the breeding of horses, a do-it-yourselfer in house construction and finishing; and walking on the Belgian North Sea beach.