A white-tailed Deer next to flooded Indian Creek in The Colony, Texas.
Here is what Wikipedia has to say about White-tailed Deer:
Deer have dichromatic (two-color) vision with blue and yellow primaries; humans have trichromatic vision. Thus deer poorly distinguish the oranges and reds that stand out so well to humans. This makes it very convenient to use deer-hunter orange as a safety color on caps and clothing to avoid accidental shootings during hunting seasons.
