Cyflwynodd Deddf Lles Anifeiliaid 2006 y cysyniad o'r ddyletswydd i ofalu am anifeiliaid anwes, sydd wedi’I chymhwyso ers amser hir yn achos anifeiliaid fferm, ynghyd â'r 'pum angen' – amgylchedd addas i fyw ynddo; diet iach; y gallu i ymddwyn yn normal; cwmni priodol; a chael eu hamddiffyn rhag poen, anaf a chlefyd.
The Animal Welfare Act 2006 introduced the concept of the duty of care for pet animals – which has long been applied to farm animals and the introduction of concept of the “five needs - a suitable environment to live in; a healthy diet; ability to behave normally; appropriate company; and protection from pain, suffering injury and disease.