Pan ddaeth y Rheoliadau i rym, gwnaeth John Griffiths AC, y Gweinidog Amgylchedd a Datblygu Cynaliadwy ar y pryd, ymrwymiad i adolygu'r ddeddfwriaeth sy’n bodoli. Gofynnais i Dr Ruth Lysons, MA MSc VETMB MRCVS gynnal yr adolygiad, ynghyd â Dr Nick Coulson, MA MBA PhD VetMB MRCVS a aeth ati i adolygu asesiad Dr Lysons. Mae'r ddau yn ymgynghorwyr annibynnol.
When the regulations came into force, the then Minister for Environment and Sustainable Development John Griffiths AM committed to a review of the legislation taking place. I tasked Dr Ruth Lysons, MA MSc VetMB MRCVS, with carrying out this review together with Dr Nick Coulson, MA MBA PhD VetMB MRCVS who reviewed Dr Lysons assessment. Both are independent consultants.