This coyote is posturing towards another coyote approaching from off camera. I always use black & white when a kill (an elk) is involved. Images of a bloody mess are just too distracting and takes focus off of the main subject, which is the coyote's nasty expression.

Canon EOS 5D Mark II
EF800mm f/5.6L IS USM
800.0 mm
ƒ/8.0
1/640
ISO 100