Red squirrels face ongoing population pressure from grey squirrel competition and squirrelpox virus, raising both conservation and individual welfare concerns.
Individual red squirrels experience welfare harms including starvation when outcompeted, fatal squirrelpox disease causing lesions and respiratory distress, and stress from territorial exclusion. Grey squirrel control programmes, while beneficial for red squirrel populations, must use humane methods. Supplementary feeding must be managed to avoid concentrating animals in ways that increase disease transmission risk.