People will potty train their pets like cats and dogs, but researchers are now seeing if they can train cows to do the same. A new paper published in the journal Current Biology says German researchers are trying to train cattle to go to the bathroom on a surface where their excrements can be collected and treated to reduce ammonia emissions. The study says in just a few weeks, 11 of the 16 cows were able to regularly relieve themselves in a designated area. The system, called MooLoo training, is intended to keep waterways clean and cut greenhouse gases. The researchers hope this training can be adapted and used at outdoor farms.