#$%^&*AU2008243105B220130307.pdf#####16 ABSTRACT The present invention relates to a keeping cage for laboratory animals, specifically rodents, which is characterized in that it provides for a large floor surface on several levels, the transit of animals from one level to 5 the higher or lower level being ensured by the presence of appropriate openings in the partitioning floors. The keeping cage according to the present invention allows to make a space available to animals which is sufficiently large in terms of floor surface and in terms of height between the floors to ensure a good level of 10 wellbeing for the animals, which do not therefore suffer from behavioral disturbances. Cage for keeping laboratory animals, specifically adapted to keep laboratory animals, particularly rodents, including a base body to which an openable lid is connected, characterized in that said lid features a port for accessing the inside without removing said lid.1/8 3q~. It 3 4 t C