| climb tree | 0.57 |
| eat bark | 0.56 |
| eat twig | 0.53 |
| eat leave | 0.53 |
| leave track | 0.45 |
| eat seed | 0.45 |
| throw their quills | 0.43 |
| eat root | 0.42 |
| grow new quills | 0.41 |
| eat pine needles | 0.38 |
| More » |
| quill | 0.65 |
| over 30,000 quills | 0.34 |
| prick | 0.25 |
| found on rocky areas | 0.36 |
| observed | 0.35 |
| threatened | 0.30 |
| relaxed | 0.29 |
| eaten as delicacy | 0.20 |
| attacked | 0.16 |
| covered with quill | 0.16 |