A classic genre painting by John French Sloan, depicting the interior of McSorley's Old Ale House in New York City with its characteristic patrons and feline residents.

John French Sloan, a central figure of the Ashcan School, frequently documented the social life of New York City. In this work, he captures the interior of McSorley's Old Ale House, a venue he frequented and depicted multiple times throughout his career. The scene presents a group of men gathered at the bar, rendered with a focus on the atmosphere of the establishment rather than individual portraiture. The lighting is warm and concentrated, emanating from overhead fixtures and illuminating the figures against the dark, wood-panelled walls of the tavern.

Sloan employs a technique of tempera with overglaze, which contributes to the specific texture of the surface. The presence of the cats, from which the painting derives its title, adds a domestic element to the public space. One cat sits near the barman, while another is perched high on the cabinetry, observing the patrons. The composition is structured to draw the eye across the bar, where the interaction between the staff and the customers unfolds. Sloan avoids idealising the setting, choosing instead to present the mundane reality of early twentieth-century urban life. The figures are dressed in the attire of the period, with bowler hats and suits, grounding the image in its specific historical context. This work reflects the artist's interest in the everyday habits of ordinary people, a recurring theme in his body of work. The palette is dominated by deep browns and ochres, which reinforce the sense of a dimly lit, enclosed environment. Through his observation of the tavern, Sloan provides a record of a specific social institution in New York, capturing the quiet camaraderie of the patrons and the routine of the establishment.