Big Dog Productions

Background
This is the production company of comedian/talk show host Jay Leno.

1st Logo (1986-1987)
Logo: Superimposed in the credits of The Jay Leno Show (a 1986 TV special unrelated to Jay Leno's 2009-2010 primetime talk show of the same name), we see this notice:

BIG DOG PRODUCTIONS/ HARBROOK PRODUCTIONS

IN ASSOCIATION WITH NBC PRODUCTIONS

©National Broadcasting Company, Inc. 1986 All Rights Reserved.

On the credits of Jay Leno's Family Comedy Hour, which aired in 1987, we see this in-credit notice:

BIG DOG PRODUCTIONS/ HARBROOK PRODUCTIONS

in association with

FX/SFX: None.

Music/Sounds: None or the closing theme of the special.

Availability: Seen on the 1986 special The Jay Leno Show and the 1987 special Jay Leno's Family Comedy Hour.

2nd Logo (May 25, 1992-February 6, 2014)
Logo: On a blue background, we see a caricature of Jay Leno drawn (which is supposed to be a dog) in white with the word "BIG" to Jay's left drawn in a white vertical font, and "DOG" to his right, also drawn in a white vertical font. Below Jay is the words "PRODUCTIONS INC." and below that, "in association with," both in white. After this logo, whatever logo NBC's production division is using at the moment appears with a copyright stamp below the logo.

Trivia: The caricature first appeared as the logo for the 1986 special The Jay Leno Show (mentioned above in the description for the previous logo), and the logo also featured Jay Leno's signature. The logo for the other special mentioned above in the description for the previous logo, the 1987 special Jay Leno's Family Comedy Hour also featured the caricature.

FX/SFX: None.

Variants:
 * On early episodes of The Tonight Show with Jay Leno, "PRODUCTIONS, INC." appears in a white rectangle and the caricature was closer to the screen. The background was also navy-blue.
 * By 1993, the color changed to a lighter blue, but still had "PRODUCTIONS INC." in a slightly larger rectangle. A copyright stamp is known to have appeared on 1993 episodes.
 * A later variant has a copyright notice for NBC Studios below "in association with".
 * Some episodes from The Tonight Show with Jay Leno from 2003 to 2005 have this in a split-screen format on the right side of the screen. The font for "PRODUCTIONS INC." is also different.
 * 2005 episodes would have the border of the split-screen format diagonal rather than vertical.

Music/Sounds: The ending theme of The Tonight Show with Jay Leno plays over the logo.

Availability: Was seen on The Tonight Show with Jay Leno. This logo did not appear on Jay's 2009-2010 primetime series The Jay Leno Show, though Big Dog Productions produced the show. This is extinct outside of off-air recordings.