Euthanasia is a necessary part of swine production, so it is important that it is conducted with skill and minimal animal suffering. When the animal is insensible it can no longer feel pain or distress, and it is important to confirm this stage is reached. Acceptable mechanical means of euthanasia include blunt force trauma (>12kg), non-penetrative captive gun (>12kg), or captive bolt gun (all weights). It is important for staff to understand the process of death, which includes insensibility, tonic (rigid limbs), and clonic (paddling) steps. Gas euthanasia using carbon dioxide is also acceptable for all weights, but from practical aspects can usually only be used for suckling and nursery pigs. One of the most important aspects of euthanasia is staff training. The employee should know when euthanasia is necessary, how to competently complete it, and do so in a respectful manner.