I saw a show on Anancondas where they caught an Anaconda trying to eat a boa on a branch but the boa fell off the branch and the anaconda couldn't swallow it while it was hanging so lucky for the boa the anaconda got it loose from its teeth and the boa dropped to the ground. As others have said, its just the circle of Life. Sure its not pretty but anyone who owns the animal that is getting eaten is going to be upset, well some people. Me personally, im unphased by that stuff as I view it as the circle of life.