1930  I like dogs. You always know what a dog is thinking. It has four moods. Happy, sad, cross, and concentrating. Also, dogs are faithful and they do not tell lies because they cannot talk.
1847  You want a friend in Washington? Get a dog.
1761  They [dogs] never talk about themselves but listen to you while you talk about yourself, and keep up an appearance of being interested in the conversation.
1614  All his life he tried to be a good person. Many times, however, he failed. For after all, he was only human. He wasn’t a dog.
1583  If you don’t own a dog, at least one, there is not necessarily anything wrong with you, but there may be something wrong with your life.