Yuck! Said the Yak (Picture Books)

Alfie isn't worried when a yak appears at his house, but when the yak says “Yuck!” to everything that Alfie offers him, he thinks the yak is very rude

It is a very strange day when a yak comes to Alfie’s house. Alfie offer him all kinds of different food, but all the yak says “Yuck!” Gradually Alfie starts to get annoyed with the yak for being rude, but when the yak explains that yaks like grass, it is Alfie’s turn to say “Yuck!”