Poor rabbits. That reminded me though of an episode of the Vicar of Dibley where the vicar Geraldine (Dawn French) suspects that her verger Alice may be pregnant but Alice tell her that she's done the test and the hampster didn't turn blue. According to Alice the Dibley was of telling you are pregnant is to wee on a hampster and if it doesn't turn blue then you're not pregnant, PMSL. Great episode