This card shows two stylized cats seen from behind, sitting close together as if sharing a quiet birthday moment 🎂. They rest near the lower center of the front against a soft cream background, with a gray tabby on the left leaning gently toward a warm orange cat on the right. Each wears a party hat that adds a friendly, affectionate mood: the gray cat has a pink cone hat with white dots and a small red pom on top, while the orange cat wears a yellow hat with thin white stripes and a yellow pom. The fur is painted with a soft, watercolor-like texture, with light shading and a few fine whisker lines peeking out even from the back. Their tails curl inward in a way that suggests closeness, like they’re keeping each other company at the celebration 🎉. Beneath them, the phrase “Happy Purr-thday!” is placed in a flowing dark gray line of lettering, centered under their paws. The hats sit slightly angled, with the pink dotted cone to the left and the striped yellow cone to the right.