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 – or else he will not
(I cannot be positive which)