A little known fact…warthogs caucus too. Like most hogs, they like having their way and are given to the obligatory pushing and shoving necessary to ensure that their candidate wins. And like a lot of politically minded people, they're hard headed and more than just a little pushy, although they are not generally given to racism and out and out name calling.
According to HowStuffWorks.com, presidential election primaries and caucuses are two very different methods of accomplishing the same basic thing. Simply put, they are both a means for each political party to let voters nationwide select their party's presidential nominee. More specifically, primaries and caucuses are means of selecting delegates (representatives of party members in each state) to send to the party's national convention. At each party's national convention (held the summer before the presidential election), the party selects a presidential nominee based on how party delegates at the convention vote. The Republican and Democratic parties in each state select delegates based on either caucuses or a primary vote in that state — the delegates are sent to represent voters in the state.