User blog comment:Total Drama Wiki! Wars/Week of March 15, 2015/@comment-25027229-20150316143414/@comment-25027229-20150316145321

Most shows on CN, or at least the most popular ones, have short intros. Adventure Time's clocks in at 25 seconds, but half of it is just views of landscapes and such, Steven Universe's is 21 seconds and uses it wisely, and Regular Show has no intro, just a dark screen with the title cards. I don't know of any currently airing cartoons with long intros. Ten years ago they were common, but times have changed.