Nickelodeon Animation Studio

Background
Nickelodeon Animation Studios (also known as "Nicktoons Productions"), the animation unit of Nickelodeon, was established from Games Animation in 1990, and is best known for producing Nicktoons such as SpongeBob SquarePants and The Fairly OddParents. The unit was also producing Nick Jr. programs such as Shimmer and Shine and Wallykazam!.

1st Logo (April 19, 1997-July 19, 2009)
Nicknames: "Splat!", "The Orange Splat", "The Nicktoons Splat"

Logo: We see the Nickelodeon splat logo, but reading "NICKTOONS" on a black BG (although sometimes it reads "NICKELODEON" and is stretched out more). Copyright information is seen below, or sometimes not at all.

Variants:
 * On some split-screen credits airings of Invader Zim, the copyright doesn't appear for a few seconds.
 * On Oh Yeah! Cartoons, the words "Produced at the Nickelodeon Animation Studios, Burbank, California" are in between the logo and copyright info.
 * On Garlic Boy, the logo is smaller and tilted to the right.

FX/SFX: None.

Music/Sounds: The closing theme of the show or a soundbite of the show. Sometimes, none.

Music/Sounds Variants:
 * For the animated version, it uses the bouncing sounds followed by a splatting noise.
 * On The Adventures of Jimmy Neutron: Boy Genius, we hear the theme song's opening riff and Jimmy saying "Gotta blast!".
 * Usually for the split-screen credits, it's the same as the original credits (including Jimmy saying "Gotta blast!"). In the case of Invader Zim, however, two variants were used. One was the synth drone and electricity sparking from the start of the episode "The Nightmare Begins" (which was the most common), and the other was a modified version of Zim laughing at the end of the opening theme.
 * On 2005 airings of Avatar: The Last Airbender, a glitch happened where the superimposed version showed after the split screen credits with the kids laughing audio.

Availability: Was very common in its own time, but it's now rare, as Nickelodeon is deleting pre-2009 logos on television, and is replacing them with the 2009 Nickelodeon Productions logo. However, some prints keep this logo intact.
 * The "Nicktoons" variant appeared on every new Nicktoon starting with The Angry Beavers, and was also used on CatDog, ChalkZone, and recent prints of SpongeBob SquarePants episodes from the era, plastering the "Scribble", among others, excluding all Klasky-Csupo/Nick shows, up until Tak and the Power of Juju.
 * The 2009 Nickelodeon Productions logo usually plasters this on reruns. Even NickRewind on TeenNick is replacing this logo and the first one with the same logo during split-screen credits (Angry Beavers is one show that still retains this logo because there is no split screen credits at the end).
 * Hey Arnold has this logo plastered by the one of the 2017 Nickelodeon Productions logos on NickRewind, but VOD prints retain it (season 1 episodes have the first logo); it's the same for CatDog and Angry Beavers.
 * The "Nickelodeon" variant is seen on Jimmy Neutron, My Life as a Teenage Robot, Catscratch, non-US airings of early El Tigre episodes, early episodes of Random! Cartoons, 2007 episodes of SpongeBob SquarePants, and the final season of ChalkZone. It's also superimposed over the closing credits of Avatar: The Last Airbender. The main logo still appears on new episodes of shows that debuted prior to 2007, such as SpongeBob SquarePants, until 2008.
 * The version without the copyright info was seen on Charlotte's Web 2 - Wilbur's Great Adventure and the teaser trailer for The Rugrats Movie. It is also retained on Amazon Instant Video prints of SpongeBob SquarePants.
 * From 2001 to 2006, this logo was seen on certain Nicktoons after split-screen credits on Nickelodeon, replacing the 2000 Nickelodeon Productions "Weird Object" logo. This includes Jimmy Neutron, Oh Yeah! Cartoons, The Fairly OddParents (which alternated with "The Weird Object"), ChalkZone, My Life as a Teenage Robot, Danny Phantom, and Invader Zim, which kept their respective logos while all of the other Nicktoons used the regular Nickelodeon Productions logo.
 * Along with "The Weird Object", this has been extinct on television since 2006 and can only be found on VHS recordings or encodes online. Also seen on the 1997 SpongeBob SquarePants pilot and the 1998 Jimmy Neutron pilot.
 * The last cartoon to premiere with this logo was El Tigre: The Adventures of Manny Rivera, while the last to use it was on the SpongeBob SquarePants episode "Goo Goo Gas". It could also be seen on the three super-deformed shorts of Avatar: The Last Airbender, which are preserved on the season 2 DVD release.

Editor's Note: If this logo has been shown after Nickelodeon USA's split-screen credits, sometimes the name of the show in the copyright notice is very horribly shortened down (e.g., My Life as a Teenage Robot becomes Teen Age Robot, and Oh Yeah! Cartoons becomes Oh Yeah!).

2nd Logo (1999-2006?)
Nicknames: "Basic Splat", "Trampoline Splat", "The Bouncing Splat"

Logo: On a white background, an orange ball of slime bounces on a trampoline (which has a sky blue pad, grey supports, and orange rimming) 3 times, with each bounce producing 3 orange pulses. The camera shifts around it as well, showing a blue "sky" briefly. After the 3rd bounce, the blob flies towards the screen as the "NICKELODEON" appears on it and the blob continues to wave, as "A" and "PRODUCTION" appear letter by letter in orange. In the lower right corner, 4 translucent orange rings pulse out as the blob stops waving, becomes 2D, and changes shape before cutting to the show.

Variant: There is a variant seen on international airings of Rocket Power which just has the Nickelodeon logo.

FX/SFX: CGI animation of the ball and the trampoline.

Music/Sounds: Three bouncing sounds, followed by the first eight notes of the Nickelodeon theme being played on an off-key glockenspiel.

Availability: Rare; can be seen on Spanish prints of Nickelodeon shows, such as episodes of Pistas de Blue (the Spanish dub of Blue's Clues) on Nick on Demand En Español. In Brazil, it is seen some season 3 episodes of SpongeBob SquarePants, the first season of Dora The Explorer, on some episodes of Blue's Clues, As Told By Ginger, The Adventures of Jimmy Neutron: Boy Genius, and Rocket Power.

Editor's Note: None.