The show mostly uses Hanna-Barbera sounds along with minor selections from Series 1000, Series 4000, Premiere Edition Volume 1, and Cartoon Trax Volume 1.
- H-B HIT, CARTOON - HORN BONK (Heard once in "Making the Grade" and twice in "Curtain Call" and "Revenge of the Killer Bunnies".)
- H-B SLIDE, CARTOON - FIDDLE SLIDE DOWN 03 (Heard once in "Curtain Call", "Finishing School", and twice in "Revenge of the Killer Bunnies".)
- H-B SLIDE, CARTOON - FIDDLE SLIDE UP, SHORT 03 (Used often whenever Spring, the titular character's cat appears.)
- H-B SNAP, CARTOON - POP AND BIG SNAP WITH BOING (Heard twice in "Follow the Leader" and "Monster Factor".)
- H-B TAKE, CARTOON - SMALL WHISTLE TAKE DOWN (Heard often in "Follow the Leader".)
- H-B ZIP, CARTOON - HIGH WHISTLE ZING OUT
- Hollywoodedge, Bounce Jews Harp CRT015806/Sound Ideas, HIT, CARTOON - FLAT BONK (Hollywoodedge version used once in the Season 1 intro and Sound Ideas version used once in "Making the Grade" and "Finishing School".)
- Hollywoodedge, Funny Multi Swishes CRT054102/Sound Ideas, SWISH, CARTOON - TWIRLING SWISH, MEDIUM (Heard once in "Revenge of the Killer Bunnies".)
- Hollywoodedge, Sm Heavy Metal Door Sl PE185001 (Heard twice in "Farewell, My Bully".)
- Sound Ideas, AIRPLANE, JET - ATOM ANT JET BY (Heard once in a low pitch in "Farewell, My Bully".)
- Sound Ideas, BELL, ALARM - BURGLAR OR FIRE ALARM 01 (Heard once in "Revenge of the Killer Bunnies" and "Monster Factor".)
- Sound Ideas, BELL, ORCHESTRA - FAST GLISS UP, MUSIC, PERCUSSION (Heard once in "Making the Grade", "Monster Factor", and "Follow the Leader".)
- Sound Ideas, BIRDS, VARIOUS - LIGHT CHIRPING AND TWITTERING, ANIMAL (Heard quadrice in "Revenge of the Killer Bunnies" and once in "Nasty Norman", "Monster Factor", and "Follow the Leader".)
- Sound Ideas, BOING, CARTOON - BIG BOING (Heard once in "Finishing School" and in "Catnapped".)
- Sound Ideas, BOING, CARTOON - BIG, LONG BOING (Heard once in "Revenge of the Killer Bunnies" and "Nasty Norman".)
- Sound Ideas, BOING, CARTOON - BOING AND SPRING (Heard twice in "Follow the Leader" and once in "Finishing School".)
- Sound Ideas, BOING, CARTOON - GONG BOING (Heard once in "Nasty Norman".)
- Sound Ideas, BOING, CARTOON - HOYT'S BOING (Heard thrice in "Finishing School" and twice in "Catnapped".)
- Sound Ideas, BOING, CARTOON - SPROING 01 (Heard once in "Revenge of the Killer Bunnies".)
- Sound Ideas, BOING, CARTOON - TROMBOING (Heard thrice in "Finishing School".)
- Sound Ideas, BOINK, CARTOON - TIMP DOINK (Heard once in "Making the Grade" and "Finishing School", thrice in "Curtain Call", and six times in "Farewell, My Bully".)
- Sound Ideas, BORK, CARTOON - LOUD ZORK (Heard in multiple episodes.)
- Sound Ideas, BORK, CARTOON - LOW BORK (Heard once in "Finishing School".)
- Sound Ideas, CARTOON - FUSE, BORK, TWANGS AND BOINKS (Heard once in "Finishing School" and "Revenge of the Killer Bunnies".)
- Sound Ideas, CARTOON, BOING - JEW'S HARP BOING, SHORT 01 (Heard often in "Computer Chaos" and once in "Farewell, My Bully".)
- Sound Ideas, CARTOON, HORN - BICYCLE HORN, THREE TOOTS (Heard once in "Computer Chaos".)
- Sound Ideas, CARTOON, WHISTLE - SLIDE WHISTLE, DOWN, LONG (Heard once in "Farewell, My Bully".)
- Sound Ideas, CARTOON, WHISTLE - SIREN WHISTLE (Heard once in "Farewell, My Bully".)
- Sound Ideas, CARTOON, WHISTLE - SIREN WHISTLE, THREE STOOGES 01 (Heard once in "Farewell, My Bully".)
- Sound Ideas, CRASH, CARTOON - CRAZY BASS DRUM AND CYMBAL CRASH, MUSIC, PERCUSSION 01 (Heard twice in "Making the Grade".)
- Sound Ideas, FLEXITONE - ACCENT, ONE TONE, BOING, MUSIC, PERCUSSION, COMEDY (Heard thrice in "Catnapped".)
- Sound Ideas, HEAD SHAKE, CARTOON - XYLO HEAD SHAKE (Heard once in "Nasty Norman".)
- Sound Ideas, HIT, CARTOON - GEDUNK (Heard once in "Making the Grade" and in "Follow the Leader".)
- Sound Ideas, HIT, CARTOON - SHRILL BILP (Heard once in "Nasty Norman".)
- Sound Ideas, HIT, CARTOON - SLIDE IN AND FLBONK
- Sound Ideas, JUNGLE, AMBIENCE - VARIOUS BIRDS (Heard once in "Finishing School".)
- Sound Ideas, POP, CARTOON - PAPER BAG BURST (Heard once in "Revenge of the Killer Bunnies".)
- Sound Ideas, RICOCHET - CARTOON RICCO 01
- Sound Ideas, RICOCHET - CARTOON RICCO 02 (Heard once in "Farewell, My Bully".)
- Sound Ideas, SKID, CARTOON - SHORT SKID (H-B) (Heard once in "Farewell, My Bully".)
- Sound Ideas, SLIDE, CARTOON - FIDDLE SLIDE UP 01 (Heard once in "Revenge of the Killer Bunnies" and "Farewell, My Bully".)
- Sound Ideas, SLIDE, CARTOON - FIDDLE SLIDE UP, SHORT 02 (Used once in a low pitch in "Making the Grade".)
- Sound Ideas, SPACE - LARGE SPACE COMPUTER, CARTOON (Heard once in "Farewell, My Bully".)
- Sound Ideas, SPLAT, CARTOON - PAINT FIGHT GLOP 02 (It or a similar sound is used once in "Making the Grade".)
- Sound Ideas, STRETCH, CARTOON - RUBBER STRETCH, LONG (Heard once in "Follow the Leader" and twice in "Finishing School".)
- Sound Ideas, STRETCH, CARTOON - RUBBER STRETCH, SHORT 01 (Heard once in "Making the Grade" and "Nasty Norman".)
- Sound Ideas, STRETCH, CARTOON - RUBBER STRETCH, SHORT 02 (Heard thrice and cut-short in "Revenge of the Killer Bunnies".)
- Sound Ideas, SWISH, CARTOON - FAST TWIRLING SWISH, MEDIUM (Heard once in "Revenge of the Killer Bunnies".)
- Sound Ideas, TAKE, CARTOON - TUBE TAKE (Heard once in "Nasty Norman" and quadrice in "Finishing School".)
- Sound Ideas, TAKE, CARTOON - WHISTLE TAKE (Heard once in "Monster Factor", "Making the Grade", and in "Finishing School". A modified version can be heard once in "Curtain Call" and "Follow the Leader".)
- Sound Ideas, TELEPHONE, ELECTRONIC - PHONE RINGS THREE TIMES, PICK UP, EXTERNAL, OFFICE (Heard twice in "Follow the Leader".)
- Sound Ideas, TWANG, CARTOON - FAST TWANGS, SHORT (Used once in "Nasty Norman" and six times in "Monster Factor".)
- Sound Ideas, WHIPLASH, CARTOON - STRETCH AND SNAP (Heard thrice in "Farewell, My Bully".)
- Sound Ideas, WHISTLE, SLIDE - DOWNWARD SLIDE, MUSIC, COMEDY 02 (Heard once in "Making the Grade" and quadrice in "Monster Factor" and "Catnapped".)
- Sound Ideas, WHISTLE, SLIDE - UPWARD SLIDE, MUSIC, COMEDY 02 (Heard once in "Curtain Call" and "Nasty Norman".)
- Sound Ideas, ZIP, CARTOON - BIG WHISTLE ZING IN (Used once in a high pitch in "Curtain Call", "Finishing School", and "Nasty Norman".)
- Sound Ideas, ZIP, CARTOON - REVERSE ZIP AND BUBBLE (Heard once in "Nasty Norman".)
- Sound Ideas, ZIP, CARTOON - RICCO ZIP IN 01 (H-B) (Heard once in "Making the Grade", "Monster Factor", and in "Curtain Call".)
- Sound Ideas, ZIP, CARTOON - TAKE ZIP (Heard once in "Making the Grade" and in "Curtain Call".)