1. The prolific artist, William Wegman, has become synonymous with using Weimaraners in his artwork. He's particularly noteworthy for his charismatic portraiture of these pups.
2. Kurt Vonnegut running on the beach with his dog Pumpkin.
An awesome author with an awesome dog. How cool is that?
3. Edith Wharton with her sweet shoulder pups. Do I need to explain more?
4. This photo by Elliott Erwitt was taken in 1974, but it looks like it could've been taken yesterday.
5. Giant George, the tallest dog in the Guinness Book of World Records. He's 43 inches!
6. Sergeant Stubby is the most decorated World War I dog. He saved his regiment from surprise mustard gas attacks!
7. Toto from "The Wizard of Oz." Her name was Terry and she starred in other movies with Shirley Temple, too. Oz was her only official screen credit.
8. Known as one of the loyal dogs, Hachiko dutifully met his owner every day at the train station. When his owner suddenly died of a hemorrhage, the pup still went to the train station every day at the same time for six years.
9. FDR with his dog, Fala. How pawsidential.
10. Shaggy the pup being rescued after Hurricane Sandy.
11. Yellow Lab, Roselle, guided her owner Michael Hingson out of the North World Trade Center Tower on 9/11.
12. Zanjeer was a bomb detection dog who passed away from bone cancer. Here, he received a full funerals with honors.
13. Sinbad served the Coast Guard for 11 years aboard the US Coast Guard Cutter George W. Campbell.
14. Denise Corliss and Bretagne worked tirelessly for search and rescue at Ground Zero.
15. Balto lead his human, Gunnar Kaasen, on a life saving journey to deliver a serum in Alaska. Balto is the subject of the documentary, "Icebound."
16. Smoky accompanied World War II soldier, Bill Wynne for two years. She even saved his life by warning him about a fire.
17. Lex was stationed with Cpl. Dustin J. Lee in Fallujah, Iraq. Lee was fatally wounded and the pup wouldn't leave his side.
Lee's parents adopted Lex and he lived out the rest of his days as a therapy dog.
18. Lucca is a military dog and a sheer miracle, who survived severe explosions while protecting her handlers.
19. Lassie is perhaps America's most well known companion and friend from television. The real Lassie was named Pal and lived to be 18 years old.
20. The real Rin Tin Tin was rescued from a World War I battlefield. His human, Lee Duncan, trained him and the pup began work in the silent film industry.
After his passing, Rin Tin Tin's image was given to many other character dogs in film, television, and literature.