Scottish otter populations are among Europe's most robust, but individual welfare is shaped by river quality, prey abundance, and territorial competition across extensive river systems.
Scottish otter welfare is closely tied to the health of the river and coastal ecosystems they inhabit. In high-quality river systems with abundant fish, individual otters maintain good body condition, successful territorial occupancy, and breeding success. River degradation through pollution reduces prey availability and forces otters to range over larger areas with greater energetic cost. Illegal persecution - still documented on some game fishing rivers where otters are blamed for fish stock depletion - creates direct welfare harm to individual animals through trapping and poisoning. River water quality investment and wildlife crime enforcement are the most important welfare interventions.