Understanding urine marking and scratching as territorial communication in cats and how to address the welfare causes humanely.
Territorial marking in cats is a welfare indicator when it occurs at elevated frequency in indoor environments - it reflects a cat experiencing ongoing social threat or territorial insecurity that drives repeated marking behaviour. The welfare response to marking is not punishment, which increases anxiety and worsens marking, but investigation of the underlying stressor and environmental modification that reduces the perceived threat. A cat that marks the door where it can see outdoor cats is communicating a specific, addressable welfare problem. A cat that marks multiple sites in a multi-cat household is likely experiencing unresolved inter-cat conflict. Addressing the welfare cause rather than suppressing the symptom produces lasting improvement.