your scientists were so preoccupied with whether or not they could that they didn't stop to think if they should

Hi guys, the line above was said by Jeff Goldblum playing the role of  Dr. Ian Malcolm in the movie Jurassic Park. Believe it or not they are actually trying to bring back some extincted species of animals.

 Here are some animals that can be cloned

1. The Woolly mammoth
2. The Saber-Toothed Cat
3. The Woolly Rhinoceros
4. The Ground Sloth
5. The Neanderthal

 and so Many more. It's happening  Should we?