I was out walking this afternoon, and noticed that my dog is pretty much the same color as the fallen brown pine needles, while his nose - gray now, since he's on in years - is the same color as the sap-covered pine cones on the ground. His belly is light, but the black that is left on his ears is similar to pine bark after a rainstorm. My pine tree dog!
And just for parity, here is our cat, at one of her birdwatching posts. She's an indoor cat. She doesn't seem to want to go out, and anyway, we lost our previous cat to a coyote.