For instance, some dolphins would receive real marks while others were swiped with a pen containing water instead of ink, to see whether the dolphins were reacting to the marking process and not the mark itself. (discovermagazine.com)
When the German Shepherd puppy later dries off it's real marking colors will really be evident - especially around its anus and on the hairs (gerdeshaus.com)
The real Mark from Middle River is normally asleep between 5 am and 11 am each day. (religion.blogs.cnn.com)