An example of 100% efficient recycling.

[TexasMac]

Check out the link below. Obviously the guy that captioned the video does not know a cow is a her, not a his. Growing up on a farm with lots of cattle around, I heard about cows that develop this behavior, but never saw one in the act.

http://www.jokeroo.com/funnyvideos/cow_drinks_his_own_milk.html

Wayne

[dakotashooter2]

The only thing I have heard about something like this is in cases where the cow may have lost a calf. They will continue to produce milk ( generally considered unsuitable for human consumption) and may do this to relieve the pressure. Or in the case of a milk cow as this appears to be, it may be a little to far in between milkings for it's comfort.

[Land_Owner]

This "action" begs for the addage where two "Think Tank" geezers were sitting on the porch watchin ol' Blue at the bottom of the stairs lickin' himself.

"I wish I could do that," one old geezer says.

"Ooh!  That dog would bite you!" say the other.