卡通扁平化简约风可爱动物头像阵列插画

minimalist cartoon illustration, warm and cool color palette including pink, yellow, orange, blue, green, and purple, 16 animal heads arranged in a 4x4 grid, each with unique colors and expressions, first row: pink rabbit, yellow lion, orange fox, blue bear, second row: white rabbit, black cat, light brown dog, yellow cat, third row: green crocodile, light brown dog, black and white panda, purple bear, fourth row: green frog, yellow bear, light blue seal, red lion, clean lines and rounded shapes, no text, white background, cute and warm visual effect, conveying a relaxed and cheerful emotional message