This cache is named in memory of times when the younger members of the family wondered if brown cows produced chocolate milk (or was it perhaps the grownups who put the idea into someone's head?). The brown cows which are sometimes in the field have forever since been referred to as the 'chocolate milk cows'. As long as you don't get too close, they seem to be generally docile and sometimes get up and move up the field if they see us coming.
Please try to replace the cache as found, so it is hidden from sight.