On-farm composting of dead animals is authorized in many American States and Canadian provinces and appears as an interesting solution to Québec farmers. During one year, composting of dead animals at the farm under Québec’s weather conditions on 16 sites, in the bovine, caprine, ovine and porcine sectors. For composting dead swine, we mixed sawdust to the carcasses, in a weight to weight ratio of 0,4 to 1,8 kg had been studied. Some leachate was collected from eight of the ten sites equipped with a recovery system, mostly due to an imperfect water-tightness. The amount of compost produced with sawdust varied from 1,0 to 2,0kg of dead animal. In the dead swine compost piles, we found an average moisture content of 52% and a nutrient content of 7kg total N, 7kg of P and 2kg of K per ton. The organic matter content remained high till the end of the cycle. As the aerate of the compost as not been made mechanically thefore could not perfectly hygenize the inputs. However, the level of pathogens have been maintained and even reduced compared to the inputs and of regular manure and slurry. Under the controlled conditions, composting did not emit any of the characteristical odours of putrefaction. This study demonstrated the feasibility of composting cadavers of different animal species in Québec. Roofing of the composting structure, which helps maintain continuous microbiological activity at all times are recommanded. Substrates less expensive than sawdust could significantly reduce the cost of composting.