| Stimulus | Perception DC |
| Hear a battle | -10 |
| Smell rotting garbage | -10 |
| Hear details of a conversation | 0 |
| See a visible creature | 0 |
| Smell smoke | 0 |
| Determine whether food is spoiled | 5 |
| Hear a creature walking | 10 |
| Hear details of a whispered conversation | 15 |
| Identify powers of a potion by taste | 15 + potion's CL |
| Hear a key being turned in a lock | 20 |
| Hear a bow being drawn | 25 |
| Sense a burrowing creature underneath you | 25 |
| Notice a pickpocket | Opposed by Finesse |
| Notice a creature using Stealth | Opposed by Stealth |