Attached Link: http://www.3dmenagerie.com/index-goo.htm

heyas; the walk designer is ONLY for bipeds. it was never intended for quadrupeds. supposedly there is a way to change the default base figure, and create new quadrupedal walks to blend together... but by the time you do that, you might as well have just animated the one cat walk you want. if you want some horse walk/trot animation cycles, check out the 3d menagerie goodie page.