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.
The North American porcupine is the only species that lives in the U.S. and Canada, and is the largest of all porcupines. A single animal may have 30,000 or more quills. North American porcupines use their large front teeth to satisfy a healthy appetite for wood.