The film used sound effects from Skywalker Sound, Hanna-Barbera, Warner Bros., Cartoon Trax Volume 1, The Premiere Edition Volume 1, Animal Trax, The General Series 6000, Series 2000, The Edge Edition Volume 1 and Signature Series - Peter Michael Sullivan. Only one sound effect from Series 8000, and one from SoundDogs' Soundstorm Library were used in the film.
- Crowd Gasp
- Disney Ricochet
- H-B ZIP, CARTOON - QUICK WHISTLE ZIP IN, HIGH/Sound Ideas, ZIP, CARTOON - RICCO ZIP IN 01 (R & B)
- Hollywoodedge, 357 Magnum Pistol Sho PE092801
- Hollywoodedge, Bear Grizzly Roar Sin AT030301/Kodiak Bear Roar Brea PE931608
- Hollywoodedge, Bear Grizzly Roars Mu AT030401
- Hollywoodedge, Bear Growls SS015401
- Hollywoodedge, Bicycle Bell Rings Sm PE190701
- Hollywoodedge, Bird Hawk Single Scre PE020801/Hawk Screech Single AT082901
- Hollywoodedge, Blowing Nose TE035801
- Hollywoodedge, Bone Crunch Hard WetB PE247201
- Hollywoodedge, Bounce Boing Drum CRT016901/Sound Ideas, BOINK, CARTOON - TIMP DOINK
- Hollywoodedge, Bottle Rocket 2 Picco PE098501
- Hollywoodedge, Bubble Pop Whoop CRT049101
- Hollywoodedge, Car Crash Small 1 Shor PE111901
- Hollywoodedge, Chimpanzee Screams AT050101
- Hollywoodedge, Chimpanzee Screams AT050201/Sound Ideas, APES, CHIMP - SCREAM, TYPICAL CHIMP SCREAM, ANIMAL, CHIMPANZEE
- Hollywoodedge, Chimpanzee Screams AT050401/Sound Ideas, CHIMPANZEE - EXCITED CALL, ANIMAL, MONKEY, APE 03
- Hollywoodedge, Chimpanzee Screeche PE026201
- Hollywoodedge, Comedy Body Fall Msx CRT017301
- Hollywoodedge, Crash Metal Glass PE110801
- Hollywoodedge, Crash Train Car Mix PE111601
- Hollywoodedge, Crowd Med Shock PE961301/Crowd Reaction Shock PE142501
- Hollywoodedge, Crunchy Fist Impact PE247301/Kick Body Hit 4 Thud Cr PE101601
- Hollywoodedge, Cymbal Crash CRT043802
- Hollywoodedge, Dry Squeaky Kiss OrS CRT027702
- Hollywoodedge, Electricity Arcing 3 PE200301
- Hollywoodedge, Elephant Single Shor AT043401
- Hollywoodedge, Elephant Trumpeting PE024801
- Hollywoodedge, Factory Buzzer Rever TE020301 (shortened)
- Hollywoodedge, Fanfare Ta Da CRT044001
- Hollywoodedge, Gooey Splat CRT052405
- Hollywoodedge, Gusts Heavy Cold Wind PE031601/Whistling Wind Stead PE033301
- Hollywoodedge, Hawk Redtailed Scree AT082801
- Hollywoodedge, Head Bonk CRT2016604
- Hollywoodedge, Head Bonk 2 Types One CRT032402
- Hollywoodedge, Heart Beat Slow 63 Bea PE146601
- Hollywoodedge, Heavy Metallic Impa CRT017304
- Hollywoodedge, Honk With Cymbal Crash CRT033005
- Hollywoodedge, Human Whistlebecko CRT059206
- Hollywoodedge, Impact Wcymbal Drum CRT032501
- Hollywoodedge, Inflate Pop Bubble CRT049104
- Hollywoodedge, Knife Draws 01 KnifeD FS030103
- Hollywoodedge, Lg Metal Wheel Creak CRT053701
- Hollywoodedge, Lightning 08 CloseG SIG012601
- Hollywoodedge, Man Yodeling 2 Types CRT029601
- Hollywoodedge, Metal Hinge Creak CRT053503
- Hollywoodedge, Punch Body Hit 1 Thud PE100801
- Hollywoodedge, Rapid Metallic Warb CRT041204
- Hollywoodedge, Screams 1 Woman Singl PE133501
- Hollywoodedge, Screams 2 Woman Singl PE133601 (Used for Phil when he screams.)
- Hollywoodedge, Screams 7 Woman Three PE134101
- Hollywoodedge, Single Bullet Impact PE236401
- Hollywoodedge, Sky Rocket Loud High TE021701 (low volume)
- Hollywoodedge, Swish 12 Single PE117101
- Hollywoodedge, Swish 29 Single PE118801
- Hollywoodedge, Thin Metal Clang CRT031701
- Hollywoodedge, Wet Splats Various CRT052101
- Hollywoodedge, Woman Screamsahhh M CRT028203
- Hollywoodedge, Wood Door OCKnob Ratt PE180201
- Looney Tunes Cartoon Fall Sound
- PEOPLE CHEERING
- SKYWALKER, AIRPLANE - DOGFIGHT, WWII AIRCRAFT, GUNFIRE
- SKYWALKER, BOUNCE - LUXO BALL BOUNCING
- SKYWALKER, BOUNCE - TIRE IMPACT
- SKYWALKER, BULLET - HOTH BLASTER RICOCHET
- SKYWALKER, BULLET - SCREAM-LIKE RICOCHET (Used to accent the car explosion and the penguins going at light-speed.)
- SKYWALKER, CAR - VARIOUS TIRE SCREECHING
- SKYWALKER, CROWD - SCREAM IN PANIC
- SKYWALKER, DOG - SCUD'S BARKING SOUND
- SKYWALKER, DOOR - VESTIBULE SLIDING DOOR, CLOSE
- SKYWALKER, ELECTRICITY - FORCE FIELD IMPACT
- SKYWALKER, ELECTRICITY - SPIELBERG "HEAT RAY" ZAP (Heard when King Julien walks across a busted powerline singing a rendition of "Hot in Herre" by Nelly, and once when a light-up streamer shoots out in the film's climax at a somewhat low volume.)
- SKYWALKER, EXPLOSION - CRACKLING EXPLOSION, MEDIUM 01
- SKYWALKER, FOOTSTEP - OMNIDROID FOOTSTEPS
- SKYWALKER GLASS, SMASH - LARGE WINDOW CRASH 02
- SKYWALKER GRENADE LAUNCHING SOUND
- SKYWALKER HIGH-PITCHED POW SOUND
- SKYWALKER, JET - ARTOO'S ROCKET THRUSTERS
- SKYWALKER, METAL - RESOUNDING CLANG 02
- SKYWALKER, METAL - TRAIN MECHANICS SCRAPING
- SKYWALKER, METAL - WEIRD CLANK
- SKYWALKER PUNCHING SOUNDS
- SKYWALKER, SPIN - MACE WINDU SPINNING THROUGH AIR
- SKYWALKER, SPIN - SINGLE SPIN
- SKYWALKER STOMACH GROWLS
- SKYWALKER, TRAIN - AIRY STEAM CHUGS
- SKYWALKER, TRAIN - CONTROL LEVERS BEING ENGAGED (Heard once in a very low volume.)
- SKYWALKER, TRAIN - LARGE COUPLING IMPACTS
- SKYWALKER, TRAIN - POLAR EXPRESS CHUGGING (Used as the chugging sound for the "Fur Power" circus train's locomotive.)
- SKYWALKER, WATER - SINGLE SPLASH
- SKYWALKER, WHISTLE - CARTOON FALL WHISTLE (Might've been confused with Looney Tunes Cartoon Fall Sound for some reason.)
- SKYWALKER, WHOOSH - INDY'S WHIP CRACKS
- SKYWALKER, WHOOSH - SCREAM-LIKE PASS BY
- SKYWALKER, WHOOSH - METALLIC PIECES FLY BY
- SKYWALKER, WHOOSH - SYNTHESIZED JET FLY BY
- SoundDogs, Train: Trains - Freight Cars Coupling Impact - MCU - Bg Engine Noise, Also Rattles, Clunks, Squeaks, & Creaks, All Coupling Related, Several Ambiance Changes (2nd impact only, low volume; heard once when the Circus Train's locomotive starts to wheelslip, and pull the rest of the consist out of the rail yard.)
- Sound Ideas, BELL, CHURCH - RINGING
- Sound Ideas, BOING, CARTOON - HOYT'S BOING (Heard when a monster truck crashes into a curb. This is the first DreamWorks Animation to use the sound effect.)
- Sound Ideas, CARTOON, ELEPHANT - TRUMPETING, ANIMAL 01
- Sound Ideas, CARTOON, HORN - SHORT HORN TOOT, MEDIUM (low volume)
- Sound Ideas, CARTOON, SNAP - LARGE RUBBER SNAP 02
- Sound Ideas, CARTOON, TWANG - WOBBLING SAW BLADE TWANG 02
- Sound Ideas, DRAWBRIDGE - GEAR AND CHAIN MECHANISM MOVING DRAWBRIDGE, CASTLE 01
- Sound Ideas, HIT, CARTOON - BIG HEAD BONK
- Sound Ideas, HIT, CARTOON - BRAKE DRUM AND BULB HORN HIT
- Sound Ideas, HIT, CARTOON - COCONUT HIT 02
- Sound Ideas, HIT, CARTOON - KABONG
- Sound Ideas, HIT, METAL - DULL METAL IMPACT, CARTOON 03
- Sound Ideas, HIT, METAL - METAL SPIKE HIT
- Sound Ideas, HIT, METAL - PIPE HIT
- Sound Ideas, HORN, BICYCLE - BULB HORN: SINGLE HONK, TOY
- Sound Ideas, HOSPITAL - HEART MONITOR: MONITORING, CONSTANT BEEPS (low volume)
- Sound Ideas, MAGIC - BOWED CYMBAL 01
- Sound Ideas, RICOCHET - CARTOON RICCO 01/ZIP, CARTOON - RICCO ZIP OUT 01
- Sound Ideas, SLIDE, CARTOON - FIDDLE SLIDE UP 01
- Sound Ideas, SQUEAK, METAL - LARGE METAL OBJECT ROLLING, SCI FI (Used for the squeaking of the wheels on the Circus Train's cars when it starts to leave the rail yard.)
- Sound Ideas, TWANG, CARTOON - METALLIC RULER VIBRATE
- Sound Ideas, WATER, SPLASH - LARGER, BIG THUMP & BIG WAVE (4th splash)
- Sound Ideas, WIND - MAGIC WHIRLWIND, FANTASY (Heard briefly during the Circus Fireworks scene; need verifications.)
- Sound Ideas, XYLOPHONE - XYLOPHONE: QUICK GLISS DOWN, CARTOON, MUSIC, PERCUSSION
- Sound Ideas, ZIP, CARTOON - KEEN ZIP IN
- Sound Ideas, ZIP, CARTOON - QUICK WHISTLE ZIP OUT
- Sound Ideas, ZIP, CARTOON - QUICK WHISTLE ZIP OUT, HIGH
- Stuka Siren (Unknown sirens used as the plane/helicopter drops. It could be CARTOON, AIRPLANE - PROP PLANE POWER DIVE SCREAM, TWO TIMES or CARTOON, AIRPLANE - PROP PLANE POWER DIVE SCREAM.)
- Unknown Sound Effects Library, Train Whistle 28 (Debut; used as the whistle on the "Fur Power" circus train's locomotive.)
- Wilhelm Scream (4th scream only; can be heard in a lower volume when a biker screams as he flees out of the freeway during a chase with Alex and his friends.)