In the general public's eyes there are two basic categories that the Pit Bull will fit into. Only one of which is an actual Pit Bull. There is the American Pit Bull Terrier and the American Bully. While these dogs derived from some of the same ancestors, they now have two completely different temperaments.
Changes to the Constitution are known as amendments. Currently, there are 27 amendments to the Constitution. The first ten amendments are known as the Bill of Rights. The bill of rights gave individual people powers, such as freedom of speech.
Only the Congress or the states can actually CHANGE the Constitution. The only way to actually CHANGE it is via a constitutional amendment. Congress or the states can initiate that, and the amendment has to be ratified by a fixed number of states before it takes effect. We've got 27 amendments, the most recent as of 1992. The Constitution can also be changed at a Constitutional Convention, but none have been done that way since the 1700s. There was a movement in the 1990s to call a Convention to make a Balanced Budget Amendment, but it never succeeded. The Supreme Court can INTERPRET the Constitution, but can't change it.