The famous 1968 movie, "The Odd Couple" shows that sometimes two completely different people can join forces to create a box office legend. But animals of different species need to stick together for their own survival. We're counting down the top 10 oddest animal couples in search of the ultimate dream team. Some animals benefit from the relation, other's don't, and sometimes both benefit. Discover how some couples have a match made in Heaven or in Hell when odd couples are taken to the Most Extreme.