The invention concerns a device (1) for testing sniffing of an animal, the device (1) comprising a receptacle (2) having a front opening (21) for receiving air flow produced by the animal.The invention is characterized in that the device (1) further comprises an air flow sensor, which is configured to measure air flow in an air exit port (22) of the receptacle (2),an odor line (4), able to introduce a selected odorant air stream (41) into the receptacle (2),a calculator unit (6) for determination of a sniffing response of the animal for the selected odorant air stream (41) based on the air flow measured by the air flow sensor (3),at least one presence sensor (5), and which is configured to detect the presence of the animal,the calculator unit (6) is configured to command sending of the selected odorant air stream (41) in the odor line (4) towards the receptacle (2) as a response to the fact that the presence sensor (5) has detected the presence of the animal.