Abstract: Arrangement Applied In Animal Cage, belonging to the technical veterinarian field, more particularly, it is a cage with active ventilation to animals such as rodents, rats, mice, and hamsters, for home use or in laboratory facilities, through which are achieved very advantageous practical, safe and functional results. The animal cage, made of polycarbonate, includes a cage, in the shape of a parallelepiped box, equipped, on the top perimeter, with flaps, with rounded edges, on which engages the lid with filter and on the rear face is provided a hole for coupling the exhaust system connected to a power source.