To increase the accuracy of the administration of doses of inhalation therapies for animals, the invention proposes a two-part inhalation mask for animals in which each mask part (9) comprises an aerosol chamber (1) and an adaptation chamber (2). The two chambers are separated by a dividing wall (3) with an opening for the aerosol so that during the inhalation phases, the aerosol passes together with the respiratory air out of the aerosol chamber (1) into the adaptation chamber (2).