"A Thing About Rats" is an episode of the 1987 Teenage Mutant Ninja Turtles cartoon series. It is the third episode of season 1 (1987). This episode of the show is part of the Heroes in a Half Shell arc. It was produced by Kara Vallow, written by David Wise and Patti Howeth, and directed by Yoshikatsu Kasai. It originally aired on December 16, 1987, in syndication. It is available on DVD on the box set released on April 20, 2004.