What's the Kennection? #4

What was the name of Robert E. Lee's loyal war horse, who outlived his master by just eight months?

In the 'Lord of the Rings' books, Ents are strange creatures that, at first glance, closely resemble what?

What 38-year-old American has earned $300 million this year, making him by far the world's highest paid athlete?

What hit 2006 animated film was originally titled 'Route 66?'

What land animals have the longest gestation periods, with pregnancies as long as 660 days?

What's the "Kennection"?