Abstract: A veterinary medical leg splint suitable for cat and dog restraint prevents an animal from flexing its elbow joint and effectively shutting off the flow of intravenous fluids. After placing an intravenous catheter in place in an animal foreleg in a cephalic vein, the cat and dog intravenous restraint splint is applied typically to the foreleg of the animal. The basic restraint is a washable, reusable, gas sterilizable longitudinal plastic restraint that can have two Velcro straps for attachment to a leg. The splint device has a one piece rigid strip having a longitudinal slit aperture adjacent the first splint terminus. The first of the two leg restraint straps is adjustably slidable in the longitudinal slit aperture, secured normal in the aperture by a restraint pin.The second splint terminus has an adjacent paddle shaped terminal piece secured normal to the rigid strip. The second of the leg straps is secured normal to the splint adjacent to the paddle.