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 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 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.
