Aggression toward humans is one of the most common behavioural reasons cats are relinquished to shelters, yet most cases are manageable with proper understanding and intervention.
Aggression in cats usually reflects unmet needs, fear, pain, or overstimulation — rarely malice. A cat that regularly bites or scratches owners is a cat under stress, and that stress represents a welfare problem for the cat as much as a safety concern for the owner. Relinquishment or euthanasia without appropriate behavioural assessment wastes manageable cases and ends lives that could be comfortable and fulfilling.