The response of individuals to training and procedures should be regularly reviewed, as some animals may be particularly difficult or non-responsive and in such cases, careful consideration should be given to their continued use.
Isendite reaktsioon treenimisele ja katsetele vajab korrapärast ülevaatamist, kuna mõned loomad võivad olla treenimise suhtes eriti tõrksad. Sellisel juhul tuleb nende kasutamise jätkamist hoolikalt kaaluda.