Grey Squirrel Mushroom Sign

Squirrels love mushrooms.  I was lucky enough to catch sight of this one going mad in the mushroom candy store of our back yard.  Why do they never eat the whole thing?  Here's a good video of a squirrel eating a mushroom it appears to have cached under a log. Or the videographer cached it.

Note clear incisor marks on lower right.

It left this one attached to its stem, in the ground, and just took a pizza slice out of it, as well as gnawing the edge.