The Kibble Trail

My cat Max likes to spit out some of the kibble bits when he's eating. I'm not sure why and it definitely seems to be a boy cat thing, as my female cat Carly doesn't seem to do it nearly as much. The result is that after a few days, the cat food dish looks like this:

But this morning, as I sat down at the kitchen table and happened to glance down at the cat food dish, this is what I saw:

A little trail of kibble bits, all perfectly lined up to lead to the water dish. Kinda cool, eh? But how did they do it???