Как по английски будет собака лучший друг человека

Собака лучший друг человека. — Dog is man\'s best friend. — Dog is the best friend of man.

Is dog man’s best friend?

What is man’s best friend?

Whose friend is dog?

Is dog or is cat man’s best friend?

Is dog man’s or girl’s best friend?

Is dog man’s best or worst friend?

Is dog man’s best friend or brother?

Dog is the best friend of man, is not it?