Abstract: A veterinary precision fixation device for use in tibial plateau leveling osteotomy procedures includes a jig assembly having a center jig member having a first and a second end, a first jig leg pivotally coupled to the first end, and a second jig leg pivotally coupled to the second end. The device also includes a saw positioning assembly including a positioning arm and a guide leg, the positioning assembly being operably connected to the jig assembly. The device further includes a saw guide assembly having a saw fixation member slidably coupled to at least one slide bar wherein the slide bar is coupled to the guide leg of the saw positioning assembly. A method for using the precision fixation device in a tibial plateau leveling osteotomy is also provided for making a substantially perpendicular cut of the tibia.