Apparatus configured for dispensing bedding inside of breeding cages for use in pharmaceutical preclinical research centres, including: a loading hopper located in the upper part of the apparatus, and adapted to contain the bedding to be supplied to the cages; at least one supporting plane adapted to support one or more cages, and positioned under the hopper; an actuator under the hopper, adapted to raise or lower the hopper and the at least one supporting plane; one or more dosing mouths located in the lower part of the loading hopper, and adapted to feed into the cages given quantities of bedding from the hopper; a dispensation system adapted to dispense bedding into the cages through the one or more dosing mouths; a control system adapted to determine the quantity of bedding and to control the actuator; and a base for supporting the apparatus.