Tamara Ikenberg of The News Journal
states that "some trace the lolcats back to the site 4chan
, which features bizarre cat pics [pictures] on Saturdays, or 'Caturdays'." The meme of "Caturdays" was introduced no later than February 5
, when the Caturday community on Livejournal was first opened.
Ikenburg adds that the images have been "slinking around the Internet for years under various labels, but they didn't become a sensation until early this year  with the advent of icanhascheezburger.com
The first image on "I CAN HAS CHEEZBURGER?" was posted on January 11
The use of "lolcat" to describe the phenomenon was introduced no later than June 14
, when lolcats.com
was registered. Lev Grossman of Time wrote that the oldest known example "probably dates to 2006", but later corrected himself in a blog post where he recapitulated the anecdotal evidence readers had sent him, placing the origin of "Caturday" and many of the images now known as "lolcats" in early 2005.