Ray Romano
Manny (voice)
John Leguizamo
Sid (voice)
Denis Leary
Diego (voice)
Goran Višnjić
Soto (voice)
Jack Black
Zeke (voice)
Cedric the Entertainer
Carl (voice)
Stephen Root
Frank / Start (voice)
Diedrich Bader
Oscar (voice)
Alan Tudyk
Lenny / Freaky Mammal / Dab (voice)
Lorri Bagley
Jennifer (voice)
Jane Krakowski
Rachel (voice)
Peter Ackerman
Dodo / Freaky Mammal (voice)
P.J. Benjamin
Dodo (voice)
Josh Hamilton
Dodo / Aardvark (voice)
Chris Wedge
Dodo / Scrat (voice)
Denny Dillon
Glyptodon (voice)
Mitzi McCall
Tara Strong
Baby Start (voice)
Darin De Paul
Additional Voices (voice) (uncredited)
Dann Fink
Dodo (voice) (uncredited)
Patrick Pinney
Various Mammals (uncredited)
Phil Proctor
