A 1 year old, male castrated Labrador Retriever presented to Cornell University Hospital for Animals Emergency Service in May of 2018 for an acute, non-weight bearing lameness and plantigrade stance of his left hind limb after being with other dogs at a dog boarding facility. A diagnosis of type IIc calcaneal tendon rupture was made based on presentation, palpation, and radiographs. Surgical repair of the tendon was performed using non-absorbable suture in a locking loop and three-loop pulley pattern, with placement of a calcaneotibial screw and bivalve cast. Calcaneal tendon rupture is the second most common tendinopathy in the dog. Several techniques exist to repair the tendon and promote its healing, all with a good prognoses for return to function. This report will discuss the diagnostics, presentation, surgical techniques, and aftercare of dogs with traumatic calcaneal tendon rupture.