'''Augustus Mutt''' is a tall, lanky man with a penchant for gambling, especially on horse races. His get-rich-quick schemes often lead him into humorous predicaments. Mutt is married to a woman known only as Mrs. Mutt (whom Mutt always addressed as "M'love"; Al Smith admitted in a Boston Globe newspaper column that her first name was Ima – and conceded that he did not use it often because it was not a complimentary name). The Mutts' son was named Cicero.

'''Jeff''' is a short, bald, hotheaded man with distinctive mutton chop sideburns. Initially introduced as an inmate of an insane asylum who shares Mutt's enthusiasm for horse racing, Jeff becomes Mutt's loyal companion in various escapades. Rarely does Jeff change from his habitual outfit of top hat and suit with wing collar. He has no last name, stating his name is "just Jeff—first and last and always it's Jeff". Jeff has a twin brother named Julius, who looks so much alike that Jeff, who cannot afford to have a portrait painted, sits for him when he is too busy to pose.

Over time, the strip evolved from its initial focus on horse racing to explore a broader range of Mutt's outlandish schemes, with Jeff often serving as his (sometimes reluctant) partner. The popularity of "Mutt and Jeff" led to various adaptations, including comic books, animated films, and merchandise, cementing its place in American pop culture.

Characteristic lines and catchphrases that appeared often during the run of the strip included "Nix, Mutt, nix!", "For the love of Mike!" and "Oowah!"

Friends of Mutt and Jeff have included Gus Geevem, Joe Spivis, and the English Sir Sidney. A recurring theme in the strip has the two interacting with celebrities, including sports figures, actors, and politicians. They often refer to these real-life people in a chummy way, such as an actor "Doug" Fairbanks and president "Herb" Hoover.

All published appearances of  Mutt & Jeff from before January 1, )-(95)}} are public domain in the US.

Some notable appearances are listed below:

*Mutt and Jeff (1907-)-(96)}})
*Mutt and Jeff #6-18 (Cupples and Leon)

*Mutt & Jeff #1-54, 56, 104-109
*All-American Comics #1-11, 24-25
*The Funnies #1-3, 6, 8, 10-16, 18-19
*Popular Comics #1-3, 8, 29-37
*First Love Illustrated #89

*Mutt and Jeff (live-action) (1911-1913)

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*Jeff's Toothache
*Mutt And Jeff In The Submarine
*Domestic Difficulties
*A Restless Night
*The Indestructible Hats
*Cramps
*The Dog Pound
*The Hock Shop
*The Promoters
*Two for Five
*Wall Street
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*The Submarine Chasers
*A Chemical Calamity
*A Day In Camp
*A Dog's Life
*Cows And Caws
*In The Theatrical Business
*Preparedness
*Revenge Is Sweet
*The Bell Hops
*The Circus
*The Boarding House
*The Chamber Of Horrors
*The Cheese Tamers
*The Interpreters
*The Janitors
*The Prospectors
*Laughing Gas
|}
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*The Extra-Quick Lunch
*The DeCoy
*A Lot of Bull
*An Ace and a Joker
*Around the World in Nine Minutes
*Bulling the Bolshevik
*Efficiency
*At the Front
*Saving Russia
*Hitting the High Spots
*Hotel De Mutt
*Joining the Tanks
*Landing a Spy
*Our Four Days in Germany
*Pot Luck in the Army
*The Accident Attorney
*The Doughboy
*The Draft Board
*The Kaiser's New Dentist
*The New Champion
*The Side Show
*Throwing the Bull
*To the Rescue
*Back To The Balkans
*The Leak
*Freight Investigation
*On Ice
*Helping McAdoo
*A Fisherless Cartoon
*Occultism
*Superintendents
*The Tonsorial Artists
*The Tale Of A Pig
*Hospital Orderlies
*Life Savers
*Meeting Theda Bara
*The Seventy-Mile Gun
*The Burglar Alarm
*The Extra-Quick Lunch
*Hunting The U-Boats

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*Landing an Heiress
*The Lion Tamers
*Here And There
*The Hula Hula Cabaret
*Dog-Gone Tough Luck
*Landing An Heiress
*The Bearded Lady
*500 Miles On A Gallon Of Gas
*The Pousse Cafe
*Fireman Save My Child
*Wild Waves And Angry Woman
*William Hohenzollern Sausage Maker
*Out an' In Again
*The Cow's Husband
*Mutt The Mutt Trainer
*Subbing For Tom Mix
*Pigtails And Peaches
*Seeing Things
*The Cave Man's Bride
*Sir Sidney
*Left at The Post
*The Shell Game
*Oh Teacher
*Hands Up
*Sweet Papa
*Pets And Pests
*A Prize Fight
*Look Pleasant Please
*Downstairs And Up
*A Tropical Eggs-pedi-tion
*West Is East
*Sound Your 'A'
*Hard Lions
*Mutt And Jeff In Paris
*Mutt And Jeff In London
*Mutt And Jeff In Switzerland
*All That Glitters Is Not Goldfish
*Everybody's Doing It
*Mutt And Jeff In Spain
*The Honest Book Agent
*Bound In Spaghetti
*In The Money
*The Window Cleaners
*Confessions Of A Telephone Girl
*The Chambermaid's Revenge
*Why Mutt Left The Village
*Cutting Out His Nonsense
*For Bitter Or For Verse
*He Ain't Done Right by Our Nell
*Another Man's Wife
* New York Night Life
* Oil's Well That Ends Well
* The Frozen North
* The Jazz Instructors
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*Dead Eye Jeff
*Fishing
*I'm Ringing Your Party
*Putting On The Dog
*The Chemists
*The Mint Spy
*The Pawnbrokers
*The Plumbers
*The Soul Violin
*Hula Hula Town
*The Beautiful Model
*The Chewing Gum Industry
*The Great Pickle Robbery
*The Honest Jockey
*The Price Of A Good Sneeze
*Nothing But Girls
*The Bicycle Race
*The Bowling Alley
*The Paper Hangers
*The Private Detectives
*The Wrestlers
*A Trip To Mars
*One Round Jeff
*The Tango Dancers
*The Toy Makers
*Departed Spirits
*The Breakfast Food Industry
*The Mystery Of Galvanized Iron Ash Can
*Three Raisins And A Cake Of Yeast
*The Bare Idea
*Hot Dogs
*In Wrong
*The Merry Cafe
*The Politicians
*The Yacht Race
*Home Sweet Home
*Napoleon
*The Cowpunchers
*The Song Birds
*A Tightrope Romance
*Flapjacks
*The Brave Toreador
*The High Cost Of Living
*The League Of Nations
*The Tailor Shop
*A Hard Luck Santa Claus
*All Stuck Up
*Farm Efficiency
*Gum Shoe Work
*Home Brew
*The Medicine Man
*Cleopatra
*On The Hop
*Sherlock Hawkshaw And Company
*The Hypnotist
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*The North Woods
*The Papoose
*The Parlor Bolshevist
*A Glutton For Punishment
*A Rose by Any Other Name
*Fisherman's Luck
*His Musical Soup
*Mutt And Jeff In Iceland
*Mutt And Jeff's Nooze Weekly
*On Strike
*Pretzel Farming
*Shaking The Shimmy
*The Berth Of A Nation
*The Latest In Underwear
*The Rum Runners

*The Lion Hunters
*The Ventriloquist
*Dr. Killjoy
*Factory To Consumer
*A Crazy Idea
*The Naturalists
*Gathering Coconuts
*It's A Bear
*Mademoiselle Fifi
*The Vacuum Cleaner
*A Hard Shell Game
*A Rare Bird
*White Meat
*Flivvering
*Cold Tea
*The Glue Factory
*The Gusher
*Watering The Elephants
*The Far East
*A Shocking Idea
*The Far North
*Touring
*Training Woodpeckers
*Crows And Scarecrows
*Darkest Africa
*Not Wedded But A Wife
*The Painter's Frolic
*The Stampede
* The Big Mystery
*The Tong Sandwich
*Shadowed
*The Turkish Bath
*A Messy Christmas
*Fast Freight
*The Village Cutups
*The Stolen Snooze
*Getting Ahead
|}
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*Bony Parts
*Stuck In The Mud
*The Crystal Gazer
*The Hole Cheese
*The Phoney Focus
*The Last Shot
*Any Ice Today
*The Cashier
*Too Much Soap
*Around The Pyramids
*Getting Even
*Golfing
*Hoot Mon
*Tin Foiled
*Hop, Skip And Jump
*Hither And Thither
*Modern Fishing
*Court Plastered
*Falls Ahead
*Riding The Goat
*The Fallen Archers
*Cold Turkey
*The Wishing Duck
*Bumps And Things
*Nearing The End
*Gym Jams
*A Ghostly Wallop
*Beside The Cider
*Long Live The King
*The Last Laugh
*The Bull Fight
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*Down In Dixie

*A Kick For Cinderella
*Accidents Won't Happen
*Soda Jerks
*The Invisible Revenge
*Where Am I?
*The Bear Facts
*Mixing in Mexico
*Oceans Of Trouble
*A Link Missing
*Thou Shalt Not Pass
*Aroma Of The South Seas
*The Globe Trotters

*Lots of Water
*When Hell Freezes Over
*Westward Whoa
*Slick Sleuths
*Ups And Downs
*Playing With Fire
*Dog Gone
*The Big Swim
*Mummy o' Mine
*A Roman Scandal
*Bombs and Bums
*Skating Instructors
*Set 'em Up Again
*A Stretch in Time
|}

*The 1st Annual Macy's Christmas Parade (1924)

* The duo's dynamic is characterized by their contrasting physiques and personalities, leading to the term "Mutt and Jeff" becoming synonymous with any pair of individuals of notably different heights. The duo is believed to have influenced the likes of Laurel and Hardy, Abbot & Costello, and Ralph Kramden and Ed Norton of ''The Honeymooners''.

*[https://en.wikipedia.org/wiki/Mutt_and_Jeff Wikipedia]
*[https://en.wikipedia.org/wiki/Mutt_and_Jeff_animated_filmography Filmography]
*[http://www.toonopedia.com/muttjeff.htm Toonopedia]
* [https://comicvine.gamespot.com/mutt-jeff/4060-56648/ ComicVine]
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