This is how the Dumbo costumes changed in the Disney parks.

Image Year Description
1950-1959 Like many Disney characters, Dumbo was first seen in "live" form at the Ice Capades that performed in the early 1950s. The first Dumbo costume has a large round head, is on four legs (thus requiring two performers, one to operate the head and the other in the rear), wears a yellow cone on his head, and his eyes are far away from each other. His trunk could be operated by the front performer. In 1955, this particular Dumbo, like all the other Ice Capades Disney characters, were used by Walt Disney for the opening of Disneyland. For this, numerous vision holes for the performers to see through were added, making this Dumbo look unsightly.
1959-1979 The second Dumbo costume is on two legs and his trunk is stiffed up. His eyes pull close to each other, and he sports a cone hat with a pompom on top of it.
Dumbo with Scrooge and Gyro

Dumbo 1980s
1979-2001 As part of a brand-new parade themed to the movie Dumbo, which debuted at both Disneyland and Walt Disney World's Magic Kingdom, a brand-new Dumbo costume was formally introduced. This Dumbo was made shorter, with the performer's head inside the elephant's hat and his arms in sleeves resembling the elephant's ears. This allowed the elephant to interact with others by flapping his ears, giving the illusion that he was trying to fly. His eyes were made smaller and more cartoon-like. Later, his trunk was modified and reduced, and his wardrobe changed color.
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1990-present The fourth and current Dumbo costume closely resembles his animated version and he has a black magic feather in his trunk. This particular Dumbo was used primarily at Disneyland for several years, while the 1979 Dumbo was used at Walt Disney World, until that costume's retirement in 2001.
v - e - d
Dumbo Logo
Films and Television: DumboMickey Mouse ClubDumbo's CircusHouse of MouseLive-action filmVideo

Video Games: Disney's Villains' RevengeDisney Emoji Blitz
Books: Big Golden BookClassic StorybookDisney's Wonderful World of ReadingDisney Read-AlongGolden Sound StoryLittle Golden Book

Disney Parks
Casey Jr. Circus TrainCasey Jr. Splash 'n' Soak StationDisney Animation BuildingDumbo the Flying ElephantGames of the Boardwalk

Entertainment: AnimagiqueFantasmic!
Restaurants: Timothy's Treats
Shops: Casey Jr. Trinket Train
Parade: Disney's Dreams On Parade: Moving OnFlights of Fantasy ParadeFestival of Fantasy ParadeHappiness is Here ParadeJubilation!Main Street Electrical ParadeMickey's Storybook ExpressThe Wonderful World of Disney Parade (The Float)
Firework: Celebrate the MagicDisneyland ForeverHappily Ever AfterMagicalOnce Upon a TimeRemember... Dreams Come True
Halloween: Happy Hallowishes

Original: DumboTimothy MouseMrs. JumboElephant MatriarchPrissyCattyGiddyRingmasterJoeMr. StorkSmittyCasey JuniorPink ElephantsThe CrowsCircus AnimalsClowns

Dumbo's Circus: LionelFair DinkumQ.T.BarnabyLilliSebastianFlip & Flap

Look Out for Mr. StorkCasey, Jr.RoustaboutsBaby MineHit the Big BossPink Elephants on ParadeWhen I See an Elephant Fly
See Also
FloridaThe Magic Feather