Dr. Seuss Enterprises

Background
Dr. Seuss Enterprises is an independent company. It was initially referred to on-screen as Cat in the Hat Productions, when Chuck Jones and MGM Animation/Visual Arts co-produced How the Grinch Stole Christmas! and Horton Hears a Who!, until DePatie-Freleng Enterprises took over animation production of the Dr. Seuss TV specials in 1971. Currently, Warner Bros. Entertainment through Turner Entertainment Co. owns How the Grinch Stole Christmas! and Horton Hears a Who!, while Warner also licenses the remaining material along with Dr. Seuss Enterprises, Inc. Dr. Seuss Enterprises is a division of Random House and subsidiary of Bertelsmann AG.

1st Logo (October 29, 1977)
Logo: On a background, we see the words "Dr. Seuss" in the Dr. Seuss font. Below that is "presents" in a different font.

Technique: The zooming-in.

Music/Sounds: The opening theme of the special.

Availability: Rare. Seen only on Halloween is Grinch Night (1977).

2nd Logo (February 5, 1995)
Logo: TBA.

Technique: TBA.

Music/Sounds: TBA.

Availability: Rare. Only seen on the 1995 special Daisy-Head Mayzie.

3rd Logo (October 13, 1996-May 15, 1998)
Logo:
 * Season 1: Over a still image of a scene from the preceding episode is the text "Based on the Works of THEODOR GEISEL". Copyright info for Dr. Seuss Enterprises is below.
 * Season 2: On a yellow background is an oil painting of Horton behind two bushes and Morton the Elephant-Bird flying above him. Next to the painting is the text "Based on the Works of THEODOR GEISEL". A registered trademark symbol and copyright info for Dr. Seuss Enterprises are below.
 * Some episodes like "The Cat in the Hat's Flower Power" and "Lester Leaps In" show an oil painting of the Cat in the Hat (shown from his arm) tipping his hat instead.

Technique: None.

Music/Sounds: The closing theme of the show.

Availability: Rare. Only seen on The Wubbulous World of Dr. Seuss, which ran on Nickelodeon for two seasons between 1996 and 1998. This is retained whenever the series is re-released, such as on Prime Video and Roku Family Channel's copies of the series, VHS and DVD releases from Columbia Tristar Home Entertainment, and Starz Kids and Family's 2018 reruns.