Dr. Seuss Season 4

• The Cat in the Hat
• Mack the Turtle
• Horton the Elephant
• Joey (Sam-I-Am's Friend)
• Norval the Fish
• Sam-I-Am
• Mr. Brown
• The Lorax
• Fox in Socks
• Mr. Knox
• Matthew Katroom
• Jane Kangaroo
• Morton the Elephant Bird
• Nick
• Prospector (from Toy Story 2)
• Little Cat A
• Little Cat B
• Little Cat N
• Little Cat Z
• Little Cat H
• Grandpa Jacob
• Little Cat Y
• Little Cat C
• Goober
• Buster (from Toy Story 2)
• Scud (from Toy Story)
• Sid (from Toy Story)
• Mother Bird (from PD Eastman)
• Zurg (from Toy Story 2)
• Thomas (from TTTE)
• Donald/Bill (from TTTE)
• Madge (from TTTE)
• Molly (from TTTE)
• Murdoch (from TTTE)
• Thing 1 (does not speak)
• Thing 2 (does not speak)
• Thidwick the Big-Hearted Moose (does not speak)
• Little Cat Fleep (does not speak)
• Pam-I-Am (does not speak)
• The Grinch (cameo, mentioned)
• Picnic Bug (cameo)
• Junior Kangaroo (cameo)
• Lotso (from Toy Story 3) (cameo)
• Percy (from TTTE) (cameo)
• Oliver (from TTTE) (cameo)
• Gordon (from TTTE) (cameo)
• Stepney (from TTTE) (cameo)
• Belle (from TTTE) (cameo)