What does it mean when froth comes out of a horses bum?

Are dogs blue? How do dogs cool off? Where does the mongrel go to get his prize in When Great Dogs Fight? What do koalas and grizzly bears have in common? What is the baleen whales common name? How have red foxes adapted to the Savannah? Do the Pembroke Welsh Corgis have spotted tongue's. we have a corgi mix and she has a spotted tongue. What breeds have spotted tongue's? What kills hippos? In the movie Alexander what was the breed of horse that they used? When was Seattle slew euthanized? Are badgers a friendly animal? What is it that a cow has four of and a women only two of? What are facts about possums in Shenandoah? Has a dog ever been to Chicago? When you put your male rabbit in with a female rabbit they mate but why when i put him in with a another certain female does she start jumping on him and not the other way round is she pregnant? What age does a bulldog male reach puberty? What is tolerating ambigrity? What is the llamas population? Can a cat or dog get chickenpox? How heavy is a walrus in stone?