Some of these I've posted before, but still some great commentary on man's best friend.
"If there are no dogs in Heaven, then when I die I want to go where they went." Will Rogers"
The average dog is a nicer person than the average person." Andy Rooney
"If you pick up a starving dog and make him prosperous, he will not bite you; that is the principal difference between a dog and a man." Mark Twain
"There is no psychiatrist in the world like a puppy licking your face." Ben Williams
"Don't accept your dog's admiration as conclusive evidence that you are wonderful." Ann Landers