Equipment choice for dogs — collars, harnesses, leads — has significant welfare implications, with aversive devices causing measurable harm and welfare-positive alternatives performing equivalently.
Equipment choice is a welfare decision with direct consequences for the dog's physical and psychological health. Shock collars cause pain and fear that are well-documented in welfare research; this is why they have been banned by multiple jurisdictions. Prong collars apply pressure that can damage cervical spine tissue and sensitise areas that create fear associations with leash contact. These harms are entirely unnecessary because welfare-positive alternatives achieve equivalent control outcomes without pain or injury. The choice between punitive and positive equipment is not a trade-off between effectiveness and welfare — it is a choice between two effective approaches with very different welfare profiles.