| # | Clue | Answer As Given | Value | Round | Category | Air Date | Show |
|---|---|---|---|---|---|---|---|
| The spines on a hedgehog are actually a modified form of this, something you have | hair | $400 | J | YOU'RE SUCH AN ANIMAL | 2003-07-11 | #4360 | |
| Mammals are the only class of animals that exhibit this outgrowth from the skin | hair | $500 | J | MAMMALS | 1991-07-16 | #1602 | |
| The human anatomy's equivalent to a porcupine's quills | hair | $200 | DJ | ZOOLOGY | 1987-12-09 | #753 | |
| A porcupine's quills are a specially adapted form of these | hair | $400 | DJ | ANIMALS | 1986-02-13 | #374 |