This whimsical illustration depicts a lively birthday party celebrated entirely by cats. A central wooden table is set with plates, treats, and a large cake with lit candles. Numerous cats of various breeds and colours, many wearing colourful party hats, are gathered around the table and throughout the room. Some cats are seated in chairs, some are on the table, and others are playfully exploring the surrounding space. One cat sits in a large, comfortable armchair on the left, while another rests on a floor cushion on the right.
The room is decorated for the festive occasion with strings of colourful bunting draped across the ceiling. A chalkboard hanging on the wall displays the message, "Happy Birthday Betty," while another sign on the right reads "WRENS CUSTARD" with a small bird icon. The background features warm, pastel-coloured walls and a collection of eclectic items, including framed pictures, a tall cabinet filled with colourful dishes, and various small toys scattered across the floor.
The artwork is rendered in a detailed, charming illustration style with a warm and inviting colour palette. Soft tones of cream, light pink, and wood brown create a cozy atmosphere, punctuated by the vibrant hues of the cats' fur, the bunting, and the birthday treats. The scene is dense with playful details, from small mice lurking under furniture to individual personality traits depicted on each cat, evoking a cheerful and chaotic sense of celebration.