Joyful Round Animal Character in Minimalistic Style

A super cute and round animal (cat or puppy) shaped like the letter 'O', in a minimalistic cartoon style. The character has a perfectly circular body, big expressive eyes, a sweet happy or surprised face, and tiny adorable paws. The design is simple, joyful, and heartwarming, evoking trust and positive emotions. Bright, soft colors, clean lines, no excessive details. The expression is cheerful and innocent, making you smile instantly. Stylized 2D illustration, reminiscent of a children's book or a friendly mascot.