Gramaisc
Forum O. G.
It is not unknown for individual cats to not bury - e.g., http://www.thecatsite.com/t/238541/how-to-get-a-cat-to-cover-their-poop - a quick Google will find many more, it seems, at first glance, to stem from cat litter usage. The one that does it on my lawn is either a cat or some other animal wearing the skin of a cat.