The Yak by Hilaire Belloc

As a friend to the children commend me the Yak.
You will find it exactly the thing:
It will carry and fetch, you can ride on its back,
Or lead it about with a string.

The Tartar who dwells on the plains of Tibet
(A desolate region of snow)
Has for centuries made it a nursery pet,
And surely the Tartar should know!

Then tell your papa where the Yak can be got,
And if he is awfully rich
He will buy you the creature—of else he will not.
(I cannot be positive which.)

After Church when I was a child, my father would often take me and my siblings to visit the outdoor zoo in a park near where he grew up. The yaks‘ enclosure was a curiosity – I could never understand the game they played wherein the bigger yak climbed on top of the smaller one, and the smaller one never got a turn to do the same.