Out of a dog’s mouth will never come ivory tusks

He that has no money might as well be buried in a rice tub with his mouth sewn up

Illness comes in by mouth; ills come out by it

How can you expect to find ivory in a dog’s mouth?

Honey in his mouth, knives in his heart

A rumour goes in one ear and out many mouths

Donkey’s lips don’t fit onto a horse’s mouth

Have a mouth as sharp as a dagger, but a heart as soft as tofu