Learning to Take Refuge

We have three cats that live on the homestead.  There's Sam, a black and white tuxedo.  There is Finn, a white albino.  And there is Enso, a gray tabby.  

The first two, Sam and Finn, are house cats to their core.  They'll sit and look out the window on nice days, but they have zero interest in trying to venture outside.

Enso, however, is another story.  During the spring and summer, he comes inside just long enough to eat, then he runs back outside to explore the woods that surround our property....