I do assure you, this is a yak! My family seems to think it is a silly looking donkey, but a donkey wouldn't work for "y" at all, would it?
The activity for this page is to braid and unbraid the tail, which is made out of embroidery floss. This is like the laces page... learning to braid takes a little more focus than is usually available when reading/playing with this book. But I like to braid, and I really like the fabric of this page.