John Leguizamo
Sid (voice)
Queen Latifah
Ellie (voice)
Seann William Scott
Crash (voice)
Karen Disher
Scratte (voice)
Kristen Wiig
Pudgy Beaver Mom (voice)
Eunice Cho
Madison (Diatryma Girl) (voice)
Harrison Fahn
Glypto Boy (voice)
Maile Flanagan
Aardvark Mom (voice)
Jason Fricchione
Adult Molehog Male (voice)
Bill Hader
Gazelle (voice)
Kelly Keaton
Molehog Mom / Shovelmouth Mom (voice)
Joey King
Beaver Girl (voice)
Lucas Leguizamo
Aardvark Boy / Beaver Kid #2 (voice)
Jane Lynch
Diatryma Mom (voice)
Regan Mizrahi
Additional voices / ADR Group
Clea Lewis
Start Mom (voice)
Allegra Leguizamo
Aardvark Girl (voice)
Carlos Saldanha
Dinosaur Babies / Flightless Bird (voice)
Claudia Besso
Additional Voice (voice)
Bea Miller
Additional Voice / ADR Group (voice)
Christian Pikes
Little Johnny (Aardvark Kid) (voice)
Avery Christopher Plum
Beaver Kid #1 (voice)
Joe Romano
Ronald (Shovelmouth Boy) (voice)
Manoela Scarpa Saldanha
Molehog Girl 1 (voice)
Sofia Scarpa Saldanha
Molehog Girl 2 (voice)
Cindy Slattery
Bird (voice)
Matt Adler
Additional Voice (voice)
Steve Alterman
Additional Voice (voice)
Anthony Amorim
Additional Voice (voice)
Holly Dorff
Additional Voice (voice)
Nicole Ehinger
Additional Voice (voice)
David H. Kramer
Additional Voice (voice)
Selenis Leyva
Additional Voice (voice)
Matt McCarthy
Additional Voice (voice)
David McCharen
Additional Voice (voice)
Tim Nordquist
Additional Voice (voice)
Devika Parikh
Additional Voice (voice)
Alexandra Pisacane
Additional Voice (voice)
Jake Schwencke
Additional Voice (voice)
Amanda Scott
Additional Voice (voice)
Johnathan Tchaikovsky
Additional Voice (voice)
Pamala Tyson
Additional Voice (voice)
June Christopher
Additional Voice (voice)
Frank Welker
Momma Dino (voice) (uncredited)