Two tales from two of the great American humorists. In âA Dogâs Taleâ, Mark Twain letâs the dog do the talking, in a heart-wrenching story of her loss of a pup at the hands of her human master. In âMemoirs of a Yellow Dogâ, O. Henry lets the dog of the title spin a humorous tale of liberation and freedom from the confines of a drab New York life for himself and his master.