1 Multiple sclerosis (MS) is a disease that causes demyelination (disruption of the myelin that insulates and protects nerve cells) of spinal nerve and brain cells.  Although the exact case is unknown, multiple sclerosis is considered to be an autoimmune disease.
The skunk is not a rodent. They belong to the family Mephitidae and the order Carnivora which does not include rodentia. They are sometimes placed in the family Mustelidae (weasels) but have been discovered to be less related than was thought.
A rodent is an animal with two sharp, constantly growing incisors.  These teeth are kept short by gnawing. Rodents include rats, mice,  hamsters and gerbils. They are mostlyâ¦ very small, although the  biggest rodent is the capybara, which can grow to up to 4.3 feet.  Canine ancestors may be a rodent or rodent related.