In one of the scenes where the audience is clapping at the circus, you can see that Dr. Dihn's hair is grey instead of black.
Clifford: Hello, Mr. Gordo. I'm Clifford, and these are my friends, T-Bone and Cleo.
Boomer: Clifford says he's your biggest fan.
Gordo: I can see that!
Dennis Haley is credited as Denis Haley and Haunani Minn is credited as Haunami Minn.
Clifford's Big Idea: Play Fair.
Speckle Story: Speckle and the Little Big Snack