Alphabetical Animals is a 1992 series of graphic artwork by Osamu Sato. It may be viewed on the defunct OSD website. According to this page, Alphabetical Animals was published in book form the same year by Tom's Box. However, no scans are known to exist.
The letters and numbers featured in Alphabetical Animals make several appearances in other works by Sato, namely the videos ABC.mov and I LOVE YOU. The letter X can be seen in Rolypolys no Nanakorobi Yaoki. The entire "font" can be seen in the Grateful in All Things art book.