a Mutant Ninja Rat
And it was a teenager, too!
I'm surprised better visual acuity wasn't on the list. I really don't care about wider colour spectrum, but it would be nice to have the eyes of an eagle. Even 20/20 isn't perfect. There's many people who can see much better than 20/20. A quick google shows that some people have 20/16 or 20/12. Which means they can read something at 20 feet, which most people would have to be at 12 feet to read. Some test subjects have gone as far as 20/8. But some species of hawk are about 20/2. I wonder what it would be like to be able to see that well.
Eagles and hawks may have very sharp eyesight, but they also have a narrow field of vision. Human eyesight is a compromise between sharpness and peripheral vision. There is an XKCD cartoon that illustrates the difference between what a human can see straight in front of him and what he can distinguish out of the corner of his eye. But no, I can't recall its number (yeah, I know, hand in your geek card at the door)...
As George Costanza said, "It's not a lie if you believe it."
John Le Carré also said the same thing. In his book "A Perfect Spy" the main character, Magnus Pym, learns this art from his con man father. And the character of Magnus' dad was heavily based on Le Carré's own father.
He has not acquired a fortune; the fortune has acquired him. -- Bion