Women do not usually experience symptoms of pregnancy before implantation, but the implantation increases the levels of the pregnancy hormone HCG which will cause most of pregnancy symptoms. In many cases, women will start experiencing these symptoms around week 4.
They are terrific climbers because of their long claws, and have excellent balance. Porcupines are mainly solitary and nocturnal but sometimes forage during the day. They can live from 10 to 20 years. Porcupines are considered to be intelligent, rapid learners with good memories.hey have dark brown fur, covered with thick barbed quills. One porcupine can have as many as 30,000 quills! Each quill is tipped with microscopic barbs or hooks that drive them deeper into the flesh of unlucky predators. Most porcupines have a robust body, small head, small ears, short legs, and a short, thick tail.
Predators: Many animals occasionally kill porcupines, especially young ones. These include the coyote, red fox, black bear, bobcat, mink, marten, long-tailed weasel, ermine, and great horned owl. The fisher is the only habitual predator of the porcupine, and may suppress populations of this rodent. Predators sometimes succumb to quills. Social Behavior: 1  Social system-Porcupines are solitary during much of their lives. 2  Exceptions occur during the winter when as many as 12 may den communally, and during courtship.