Otters are charismatic indicators of river ecosystem health. Their welfare is closely tied to water quality, prey availability, and protection from persecution.
Otter welfare is inseparable from river ecosystem health. Otters that cannot find sufficient fish prey experience starvation stress - foraging becomes increasingly difficult and time-consuming before body condition deteriorates. Pollution events cause acute toxic poisoning and disrupt the invertebrate prey base that supports fish populations. Road mortality is frequently violent - otters hit by vehicles may not die instantly and experience significant trauma. Illegal persecution - snaring, trapping, or poisoning by those who view otters as competitors for fish - causes prolonged suffering in animals that have legal protection. The welfare of individual otters depends on clean rivers, abundant prey, safe road crossings, and enforcement of legal protections.