A drug delivery device for animals, the device comprising: at least a first syringe coupled with a first tube connector and a second syringe coupled with a second tube connector; a plurality of disposable tubes, including at least a first tube, a second tube, a third tube and a fourth tube; at least one catheter; a first reservoir containing a first fluid; at least one second reservoir containing a drug fluid; a third tube connector in fluid communication with the at least one catheter; characterized in that the device further comprises: at least a first and second pinch valve (18 and 20), each pinch valve having a first position and a second position, the first position and the second position each configured to receive one of the plurality of disposable tubes therethrough and for control of fluid flowing through the plurality of disposable tubes without being in fluid communication with the fluid; wherein the first tube passes through the first position of the first pinch valve and is configured to allow the first fluid to flow between the first reservoir and the first syringe through the first tube connector; wherein the second tube passes through the first position of the second pinch valve and is configured to allow the drug fluid to flow between the second reservoir and the second syringe through the second tube connector; and wherein the third tube passes through the second position of the second pinch valve and is configured to allow the drug fluid to flow between the second syringe and the catheter through the third tube connector, and wherein the fourth tube passes through the second position of the first pinch valve and is configured to allow the first fluid to flow from the first syringe to the at least one catheter through the third tube connector. at least a first syringe coupled with a first tube connector and a second syringe coupled with a second tube connector; a plurality of disposable tubes, including at least a first tube, a second tube, a third tube and a fourth tube; at least one catheter; a first reservoir containing a first fluid; at least one second reservoir containing a drug fluid; a third tube connector in fluid communication with the at least one catheter; at least a first and second pinch valve (18 and 20), each pinch valve having a first position and a second position, the first position and the second position each configured to receive one of the plurality of disposable tubes therethrough and for control of fluid flowing through the plurality of disposable tubes without being in fluid communication with the fluid; wherein the first tube passes through the first position of the first pinch valve and is configured to allow the first fluid to flow between the first reservoir and the first syringe through the first tube connector; wherein the second tube passes through the first position of the second pinch valve and is configured to allow the drug fluid to flow between the second reservoir and the second syringe through the second tube connector; and wherein the third tube passes through the second position of the second pinch valve and is configured to allow the drug fluid to flow between the second syringe and the catheter through the third tube connector, and wherein the fourth tube passes through the second position of the first pinch valve and is configured to allow the first fluid to flow from the first syringe to the at least one catheter through the third tube connector.