However it's been found that chimps and crows have evolved skills that argueably defy that logic. Chimps use sticks to pick termites out of their mounds, and longer branches to probe the depth of rivers. They use rocks to break open nuts. Crows have also been seen making tools to "catch" food. You can view a video of a crow at work here.
Please post no hints about the cache or how you retrieved it, or I'll have to delete your log. Please be gentle with it. Don't try this one at night or the neighbors will not be happy. Also avoid this one during inclement weather to keep erosion down.
Thanks to gpsfun for inspiration and assistance in creating this cache.

.