When this journal was first produced in January 1992, the intent was to publish scientific and technical papers that would have a direct benefit on the welfare of animals kept on farms, in laboratories, as companions, in zoos or as managed by man in the wild. The submitted Articles in this fourth part of the fourth volume certainly span man's use of animals and they also, I believe, demonstrate that the knowledge and understanding gained during technical studies can often be used to improve the well-being of the animals themselves.