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.
In the spring and summer porcupines eat buds, flowers, leaves and small twigs. Porcupines do not. hibernate in the winter. In winter the inner bark, or cambium, of trees forms the main part of their diet. They chew through the. outer bark of trees to get to the edible cambium.