Animal Sharing is a platform in iRATS enabling researchers to transfer surplus animals into a so-called Sharing Pool from where other researchers can obtain them, e.g. for pilot experiments. Animal Sharing contributes to the reduction principle of 3R. If an animal cannot be shared via the Sharing Pool in iRATS, there are other possibilities. The Office for Animal Welfare and 3R will support you with sharing of animal cadavers, organs, cells and tissues.