Breads and Grains. 1  Store-bought bagels: 1 to 2 weeks (refrigerator) or 2 months (freezer) 2  Commercial breads: 1 to 2 weeks (refrigerator) or 3 months (freezer) 3  Unopened flavored rice: 6 months (pantry)  Unopened white flour: 6 to 12 months 1  (pantry) Muffins: 1 week (refrigerator) or 2 months (freezer)
Of course, the most famous characteristic of this animal are the quills. When a porcupine is threatened, it assumes a defensive posturehead and shoulders lowered, back to the threat, every quill erect, tail thrashing back and fourth. This is usually enough to scare away any would-be predator.
Old World porcupines (Hystricidae) have quills embedded in clusters, whereas in New World porcupines (Erethizontidae) single quills are interspersed with bristles, underfur, and hair. No porcupine can throw its quills, but they detach easily and will remain embedded in an attacker. Base coloration ranges from grayish brown through dark brown to blackish, but this colouring is overlaid by variegated patterns of white, yellow, orange, or black due to bands on the spines.