Never Exploit a Creature

In many a story, there comes a time when the villain is intent on using a creature (usually an animal, dinosaur or monster) for his/her own evil intentions, which subsequently leads to his/her downfall. In other words, the villain learns the hard way that you should never exploit a creature or send one to do a man's job. This usually happens when the creature gets its, his or her revenge on the villain for this purpose.

Noteworthy examples

 * Dennis Nedry, Peter Ludlow, Vic Hoskins, and Eli Mills learn the hard way that cloning dinosaurs isn't a good idea. In other words, they are intent on exploiting dinosaurs, but this eventually leads to their downfall.
 * Scar was intent on using the hyenas in his plan to take over Pride Rock, but he crossed the line by betraying them, leading them to turn against him.
 * Sloan and Bree Blackburn plotted to scare a herd of elephants into running into an electric fence, but after Eliza saved them, the said animals get their revenge, turning the poachers over to the police.
 * Claire Wyden lured George, Ralph and Lizzy into Chicago, intent on killing them and endangering the city in the process, but this eventually led to her downfall when Davis Okoye and Kate Caldwell tricked her into becoming George's lunch.
 * August Rosenbluth abused Rosie the elephant for his circus, but she eventually defeated him by killing him with a metal post.

Quotes
"(As Shaman Mnyambo congratulates Eliza for saving the elephants and gives her her powers back, Sloan is lying facedown on the ground after he and Bree have fallen out of their helicopter. He looks up and gasps. The elephants are walking over to the evil twosome, glaring at them. Sloan backs up in terror as Bree struggles to get up. At this, a ranger's truck pulls up to them, with Jomo Umbelli and his squad climbing out and advancing on the poachers.) (Ranger: Don't move! You're under arrest!) (Jomo's guards grab Sloan and Bree, pinning their arms behind their backs.) (Bree: Take your hands off me!) (Sloan: There's been a mistake! I can explain!) (Bree: We were trying to HELP the elephants!) (As the rangers drag Sloan and Bree away, the elephants watch on, their eyes still burning, as they finally got their revenge on the poachers who were intent on killing them.)"

- Sloan and Bree Blackburn being defeated at the hands of the elephants they were intent on slaughtering. "(Davis: GEORGE!) (Kate lunges at Claire and snatches her arm, knocking the gun out of her hand.) GET AWAY FROM ME! GET YOUR HANDS OFF ME! (George lets out a mighty roar.) What the hell are you doing?! (Kate puts the serum in Claire's purse; the latter's eyes grow wide.) (Kate, with fire in her eyes: Feeding the monster to the gorilla!) (With a mighty blow, Kate fells Claire with a solid punch in the nose. Slowly, George's enormous, table-sized hand closes around the evil woman. Yowling in terror, Claire struggles to get free as the giant ape lifts her into the air. Then, opening his mouth, he releases his grip, dropping Claire and the serum into his gaping maw.) (screaming) Oh, SHIT!!!! (With a bellow of rage and triumph, George smashes the antenna used to lure him and the other monsters into the city.)"

- Claire Wyden being defeated at the hands of George, whom she was intent on luring to his doom. "(Vic Hoskins is trying to coax Delta over to him.) Easy, easy. I'm on your side. (Delta gazes at him, but suddenly lunges and bites him on the arm! Hoskins gives out a bloodcurdling scream as the raptor attacks him, spilling blood onto the glass door.)"

- Vic Hoskins being killed by Delta, who he was intent on using as a weapon.