Fair and Square: An Acorn Book (Unicorn and Yeti #5), Volume 5

Yeti and Unicorn cannot always agree, whether it is about which shape is most pleasing, whose style of painting is best, or, more serious, how to divide up a pie when Unicorn is content with half, but Yeti would like more--but the two friends always find a way past their differences, because their friendship is important to both.