beast of burden

No beast of burden should have to suffer that much.

Out here the animals were more than beasts of burden.

They two had looked upon the first man and his primitive beasts of burden.

Perhaps they had no beasts of burden in his land.

Someone had better tell me something soon, I vowed, or find himself another beast of burden.

It was too small to be used as a beast of burden.

When it came to work, Jack was a regular beast of burden.

Because in your home reality horses are beasts of burden.

For here I fear we must say farewell to our good beast of burden.

"To ride a beast of burden must be a novel experience for you."