Reactivity in dogs - intense responses to specific triggers including other dogs, strangers, or vehicles - significantly affects welfare and requires systematic threshold management rather than exposure correction.
Reactive dogs experience genuine emotional distress during trigger encounters - reactivity is not defiance but fear or frustration overwhelming self-control. Management that keeps dogs below threshold prevents repeated stress experiences while behavior modification changes the underlying emotional response. The welfare goal is not just reducing the behavior but reducing the emotional suffering that drives it, creating a dog that genuinely feels more comfortable around previously difficult stimuli.