The singing animal voices were provided by Bill Lee (as Ram), Ginny Tyler (as Lambs), Paul Frees (as Barnyard Horse), Marc Breaux (as Cow), Marni Nixon (as Geese), Thurl Ravenscroft (as Hog / Pig) and Peter Ellenshaw (as Penguin Waiter), with Daws Butler, Dal McKennon and Richard M. Sherman voicing the other Penguins.
The singing voices of animals were provided by a group of voice actors including Bill Lee, Ginny Tyler, Paul Frees, Marc Breaux, Marni Nixon, Thurl Ravenscroft, and Peter Ellenshaw. Daws Butler, Dal McKennon, and Richard M. Sherman also contributed to the vocal performance.