Nick Jr. is a block that aired Max & Ruby on October 21, 2002. On February 2, 2009, the Nick Jr. block ended airing Max & Ruby and Season 3 was the last season to air on the Nick Jr. block. On September 28, 2009, Nick Jr. got a new and current logo, replacing Noggin, and Season 4 was the first season to be on the new Nick Jr. channel with the current logo.
The original Nick Jr. logo used in seasons 1-3.
The current Nick Jr. logo used in seasons 4-7 and reruns of seasons 1-3.