Reference: "Dogs as Divine Messengers: Animal Angels, Spirit Guides and Totems"

Dogs offer people "an ordinary, extraordinary grace," writes Houston in Mystical Dogs. "Look in their eyes and you find beatitude; listen to the thumping of their tail when you come through the door and you know that you are well met in this curious universe of ours." “Dogs are the great companions of our lives. They teach us, love us, care for us even when we are uncaring, feed our souls, and always, always give us the benefit of the doubt. With natural grace, they give us insight into the nature of the good and often provide us with a mirror of our better nature, as well as a remembrance of once and future possibilities."

In their book Angel Dogs: Divine Messengers of Love by Allen Anderson and Linda C. Anderson write that "dogs exhibit spiritual qualities in abundance. Dogs can be wise, compassionate, loyal, courageous, self-sacrificing, and altruistic. Most of all, they can give the purest, most unconditional love."

When dogs are serving as "messengers from Spirit," they can communicate many different kinds of important messages from God, they write: "Dogs bring to humans such messages as You are loved. You are not alone. You are protected and guided by a divine higher power. Dogs deliver messages such as When you are lonely, weary, overwhelmed by life’s burdens, I am here. People who are in pain often can’t hear the voice of God whispering comfort and hope. So God sends them a messenger with a furry face, wagging tail, licking tongue, and generous heart.

- Dogs as Divine Messengers: Animal Angels, Spirit Guides and Totems (ThoughtCo.com)