Common toad populations have declined dramatically in the UK, with welfare interventions from toad patrols to habitat creation all contributing to population recovery.
Toad welfare harms are primarily at the population level rather than individual level - road mortality causes traumatic deaths for individuals but the population-level consequence of sustained annual losses is collapse of local populations. Garden-level interventions including pond creation, log pile provision and reduced pesticide use directly improve toad survival and reproductive success. These actions have aggregate welfare and conservation significance.