Audio Commentary with directors Jimmy Hayward and Steve Martino
"Watch Horton Hears a Who! With a Who" interactive picture-in-picture commentary

Deleted Footage
- "Introduction with directors Jimmy Hayward and Steve Martino" (0:25)
- Storyboard Versions (w/ optional audio commentary by directors Jimmy Hayward and Steve Martino - 14:50)
-- "Mayor's Work Commute"
-- "Jojo's Auditorium Speech"
-- "Horton's Nightmare"
-- "Jungle Chase"
-- "Burning the Hut"
-- "Horton Gets Lost"
-- "Jojo Hears Horton"
-- "Inside Katie's Head"
-- "Alternate Ending"
- Rough Animation Versions (w/ optional audio commentary by directors Jimmy Hayward and Steve Martino - 2:39)
-- "Mayor Brushes His Teeth"
-- "Mayor Proclaims to Council"
- Almost-Final Versions (w/ optional audio commentary by directors Jimmy Hayward and Steve Martino - 1:09):
-- "Mayor's Coffee Gnome"
-- "Wide-Awake Snoring"
Animation Screen Tests
- Introduction with Animator Nick Bruno (0:43)
- "Horton" (with Play All - 2:49)
-- "Original Horton Short" (w/ optional commentary with directors Jimmy Hayward and Steve Martino)
-- "Perfect 10"
-- "Enjoys Dive"
-- "Jumps on Lily Pads"
-- "Coconut Cocktail"
-- "Crawls"
-- "Hot Lava"
-- "Watches Insect Carry Clover"
-- "Snaps Tree"
-- "Swims"
- "Mayor" (with Play All - 3:47)
-- "Tip-Toes"
-- "Drives Wagon"
-- "Jumps in Wagon"
-- "Gets Scared"
-- "Messes with a Who"
-- "Sits Around"
-- "Preps for Public Speech"
-- "Phonograph"
-- "Nervous"
-- "Flexibility Test"
-- "Facial Expressions"
- "The Who's" (with Play All - 0:23)
-- "Who-Unicycle"
-- "Who-Bike"
"Bringing the Characters to Life" featurette (5:29)
"The Elephant in the Room: Jim Carrey" featurette (4:52)
"That's One Big Elephant: Animating Horton" featurette (8:08)
"Meet Katie" featurette (3:49)
"Our Speck: Where Do We Fit In?" featurette (4:01)
"Elephant Fun: The Facts" featurette (5:28)
"A Person is a Person: A Universal Message" featurette (3:42)
"Bringing Seuss to Screen" featurette (8:14)
"We Are Here!" interactive game
"Surviving Sid" short film (7:59)

English, German, Mandarin (Simplified), Portuguese (Brazilian), Spanish (Latin)

1.85:1

1080p24 AVC MPEG-4

English DTS-HD Master Audio 5.1 (48kHz/24-bit)
German DTS 5.1
Portuguese (Brazilian) DTS 5.1
Spanish (Latin) DTS 5.1
Mandarin Dolby Digital 5.1

Keep Case

Audio Commentary with directors Jimmy Hayward and Steve Martino
"Watch Horton Hears a Who! With a Who" interactive picture-in-picture commentary

Deleted Footage
- Introduction with directors Jimmy Hayward and Steve Martino (0:25) [1080i60]
- Storyboard Versions (with optional audio commentary by directors Jimmy Hayward and Steve Martino - 14:50) [SD]
-- "Mayor's Work Commute" (3:09)
-- "Jojo's Auditorium Speech" (1:30)
-- "Horton's Nightmare" (1:22)
-- "Jungle Chase" (2:25)
-- "Burning the Hut" (1:02)
-- "Horton Gets Lost" (0:36)
-- "Jojo Hears Horton" (1:58)
-- "Inside Katie's Head" (0:26)
-- "Alternate Ending" (2:18)
- Rough Animation Versions (with optional audio commentary by directors Jimmy Hayward and Steve Martino - 2:39) [SD]
-- "Mayor Brushes His Teeth" (0:44)
-- "Mayor Proclaims to Council" (1:54)
- Almost-Final Versions (with optional audio commentary by directors Jimmy Hayward and Steve Martino - 1:09) [SD]
-- "Mayor's Coffee Gnome" (0:33)
-- "Wide-Awake Snoring" (0:35)
Animation Screen Tests (with optional audio commentary by directors Jimmy Hayward and Steve Martino) [SD]
- Introduction with animator Nick Bruno (0:43)
- "Horton" (with Play All - 2:58)
-- "Original Horton Short" (0:59)
-- "Perfect 10" (0:10)
-- "Enjoys Dive" (0:21)
-- "Jumps On Lily Pads" (0:12)
-- "Coconut Cocktail" (0:11)
-- "Crawls" (0:12)
-- "Hot Lava" (0:16)
-- "Watches Insect Carry Clover" (0:10)
-- "Snaps Tree" (0:10)
-- "Swims" (0:12)
- "Mayor" (with Play All - 3:47)
-- "Tip-Toes" (0:10)
-- "Drives Wagon" (0:11)
-- "Jumps In Wagon" (0:14)
-- "Gets Scared" (0:24)
-- "Messes With a Who" (0:21)
-- "Sits Around" (0:35)
-- "Preps for Public Speech" (0:24)
-- "Phonograph" (0:22)
-- "Nervous" (0:27)
-- "Flexibility Test" (0:18)
-- "Facial Expressions" (0:14)
- "Who's" (with Play All - 0:23)
-- "Who-Unicycle" (0:08)
-- "Who-Bike" (0:14)
"Bringing the Characters to Life" featurette (5:29) [1080i60]
"That's One Big Elephant: Animating Horton" featurette (8:08) [1080i60]
"Meet Katie" featurette (3:49) 1080i60
"Our Speck: Where Do We Fit In?" featurette (4:01) [1080i60]
"Elephant Fun: The Facts" featurette (5:28) [1080i60]
"A Person Is a Person: A Universal Message" featurette (3:42) [1080i60]
"We Are Here!" interactive game [1080p]
"Surviving Sid" short film (7:59) [1080p]

Danish, English, Finnish, Hungarian, Norwegian, Swedish

1.85:1

1080p24 AVC MPEG-4

English DTS-HD Master Audio 5.1
Danish DTS 5.1
Finnish DTS 5.1
Norwegian DTS 5.1
Swedish DTS 5.1
Hungarian Dolby Digital 5.1

Keep Case

Audio Commentaries are in English with optional Danish, Finnish, Norwegian and Swedish subtitles, "Surviving Sid" is in English with optional Hungarian subtitles, rest of the Extras are in English with optional Danish, Finnish, Hungarian, Norwegian and Swedish subtitles.

DISC ONE
* The Film
Audio Commentary with directors Jimmy Hayward and Steve Martino
"Watch Horton Hears a Who! With a Who" interactive picture-in-picture commentary
Deleted Footage
- "Introduction with directors Jimmy Hayward and Steve Martino" (0:25)
- Storyboard Versions (w/ optional audio commentary by directors Jimmy Hayward and Steve Martino - 14:50)
-- "Mayor's Work Commute"
-- "Jojo's Auditorium Speech"
-- "Horton's Nightmare"
-- "Jungle Chase"
-- "Burning the Hut"
-- "Horton Gets Lost"
-- "Jojo Hears Horton"
-- "Inside Katie's Head"
-- "Alternate Ending"
- Rough Animation Versions (w/ optional audio commentary by directors Jimmy Hayward and Steve Martino - 2:39)
-- "Mayor Brushes His Teeth"
-- "Mayor Proclaims to Council"
- Almost-Final Versions (w/ optional audio commentary by directors Jimmy Hayward and Steve Martino - 1:09)
-- "Mayor's Coffee Gnome"
-- "Wide-Awake Snoring"
Animation Screen Tests
- Introduction with Animator Nick Bruno (0:43)
- "Horton" (with Play All - 2:49)
-- "Original Horton Short" (w/ optional commentary with directors Jimmy Hayward and Steve Martino)
-- "Perfect 10"
-- "Enjoys Dive"
-- "Jumps on Lily Pads"
-- "Coconut Cocktail"
-- "Crawls"
-- "Hot Lava"
-- "Watches Insect Carry Clover"
-- "Snaps Tree"
-- "Swims"
- "Mayor" (with Play All - 3:47)
-- "Tip-Toes"
-- "Drives Wagon"
-- "Jumps in Wagon"
-- "Gets Scared"
-- "Messes with a Who"
-- "Sits Around"
-- "Preps for Public Speech"
-- "Phonograph"
-- "Nervous"
-- "Flexibility Test"
-- "Facial Expressions"
- "The Who's" (with Play All - 0:23)
-- "Who-Unicycle"
-- "Who-Bike"
"Bringing the Characters to Life" featurette (5:29)
"The Elephant in the Room: Jim Carrey" featurette (4:52)
"That's One Big Elephant: Animating Horton" featurette (8:08)
"Meet Katie" featurette (3:49)
"Our Speck: Where Do We Fit In?" featurette (4:01)
"Elephant Fun: The Facts" featurette (5:28)
"A Person is a Person: A Universal Message" featurette (3:42)
"Bringing Seuss to Screen" featurette (8:14)
"We Are Here!" interactive game
"Surviving Sid" short film (7:59)
Bonus Trailers
- "City of Ember"
- "Ice Age: Dawn of the Dinosaurs in Digital 3-D"

DISC TWO (Digital Copy Disc)

English HoH

1.85:1

1080p24 AVC MPEG-4

English DTS-HD Master Audio 5.1
English Audio Description Dolby Digital 5.1

Keep Case

Comes with a slipcase.

Special thanks to Rewind user PF Vega87 for providing these specifications.