Great crested newts are one of the UK's most legally protected species, and their welfare depends on appropriate pond and terrestrial habitat management.
Great crested newts face welfare risks from illegal disturbance of hibernation sites, road casualties during spring migration, and desiccation when habitat connectivity is severed. Fish introduction to breeding ponds destroys populations within seasons by consuming eggs and larvae. Individual newts illegally captured or killed during development work face direct welfare harm. Habitat connectivity maintenance is the most important welfare intervention at landscape scale.