Device for collecting physiological information of an animal, in particular a young rodent such as a young mouse, the device comprising: - a test tight enclosure for receiving the animal, - a means (20, 21) for thermally regulating the test enclosure, - a means for renewing air in the test enclosure at a controlled flow rate, - a pressure sensor for measuring pressure difference between the air in the test enclosure and a reference, - a means for deducing a volume of air inhaled or expired by the animal during one inhalation or expiration from a pressure measurement of the pressure sensor, the device being characterized in that: - the test enclosure comprises a floor having at least three dry electrodes (48; 52), insulated from each other, each electrode being intended for collecting an electrical signal resulting from the cardiac activity of the animal when the animal is in contact with the electrode, - the device comprises a means for determining an electrocardiogram of the animal by using three electrical signals collected by the at least three electrodes, and in that the device comprises: - a reference enclosure of identical dimension to the test enclosure, the reference enclosure being intended to remain empty, - a means (20, 21) for thermally regulating the reference enclosure, in the same way as for the test enclosure, - a means for renewing air in the reference enclosure at a controlled flow rate, in the same way as for the test enclosure, wherein the reference of the pressure sensor is the air of the reference enclosure. - a test tight enclosure for receiving the animal, - a means (20, 21) for thermally regulating the test enclosure, - a means for renewing air in the test enclosure at a controlled flow rate, - a pressure sensor for measuring pressure difference between the air in the test enclosure and a reference, - a means for deducing a volume of air inhaled or expired by the animal during one inhalation or expiration from a pressure measurement of the pressure sensor, the device being characterized in that: - the test enclosure comprises a floor having at least three dry electrodes (48; 52), insulated from each other, each electrode being intended for collecting an electrical signal resulting from the cardiac activity of the animal when the animal is in contact with the electrode, - the device comprises a means for determining an electrocardiogram of the animal by using three electrical signals collected by the at least three electrodes, and in that the device comprises: - a reference enclosure of identical dimension to the test enclosure, the reference enclosure being intended to remain empty, - a means (20, 21) for thermally regulating the reference enclosure, in the same way as for the test enclosure, - a means for renewing air in the reference enclosure at a controlled flow rate, in the same way as for the test enclosure, wherein the reference of the pressure sensor is the air of the reference enclosure. - the test enclosure comprises a floor having at least three dry electrodes (48; 52), insulated from each other, each electrode being intended for collecting an electrical signal resulting from the cardiac activity of the animal when the animal is in contact with the electrode, - the device comprises a means for determining an electrocardiogram of the animal by using three electrical signals collected by the at least three electrodes, and in that the device comprises: - a reference enclosure of identical dimension to the test enclosure, the reference enclosure being intended to remain empty, - a means (20, 21) for thermally regulating the reference enclosure, in the same way as for the test enclosure, - a means for renewing air in the reference enclosure at a controlled flow rate, in the same way as for the test enclosure, wherein the reference of the pressure sensor is the air of the reference enclosure.