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 Thibet
(A desolate region of snow)
Has for centuries made it a nursery pet,
And surely the Tartar should know!
Then tell you papa where the Yak can be got,
And if he is awfully rich
He will buy you the creature—
he will not.
(I cannot be positive which.)