Alex English 
Yuck! Said the Yak [PDF ebook] 

Alfie does not seem too worried when a yak appears at his house on a bicycle but when the yak says "Yuck!" to everything that Alfie offers him to eat he thinks him very rude!Maverick Early Readers have been created with clarity and quality at their heart. The author works closely with an educational specialist to produce accurate and fun early readers for Key Stage 1 and 2. The books are written in a natural style with a strong emphasis on the story. The levels conform to the Institute of Education’s colour banding.