A dog is a man's best friend.

A real friend is like a rare bird.

Our faithful friend is still there.

Trusty has lost his sense of smell.

Let's say your trusted friend and neighbor comes to you and says,

This illustrious statesman, a staunch supporter of the struggle for independence of the African continent, was not a stranger to us.

At the hospital, the faithful dog patiently waited by the stretcher while his owner was being cared by the doctors.