Tabby cat hissing with open mouth in grass outdoor setting.

Photograph captures tabby cat displaying defensive hissing behavior outdoors on grass. Subject exhibits wide-open mouth with visible pink tongue and fangs bared, characteristic warning posture. Intense forward-facing expression with bright yellow-green eyes locked directly at camera. Sharp facial details include striped markings, extended white whiskers, pointed ears positioned upright. Blurred green background indicates natural outdoor environment with depth-of-field effect isolating subject. Technical execution employs close focus photography with shallow depth of field emphasizing feline subject against bokeh background.