There have been 42 FoxTrot books published so far, all by Andrews McMeel Publishing. Of the 42 books, 31 are collections and 11 are anthologies. The anthologies are composed of the two or three previous collections, and include Sunday strips in color.
Beginning with Death by Field Trip, the size and shape of the regular collections changed to accommodate a new Sunday strip layout. The books also became shorter (and much cheaper) to create a larger gap between anthologies.
Originally, the anthologies were made up of the previous two smaller collections, with color Sunday strips (as opposed to black and white in the smaller books). Starting with FoxTrot: Assembled with Care, the anthologies were published in a larger size, made up of the three previous smaller books. When the comic transitioned to a Sundays-only format at the end of 2006, the anthologies stopped being produced.