Tad Lincoln, Abe Lincoln's son, was a a wild child. Before Abe became president, Tad would often trash his father's law office in Illinois. He never attended formal school but went through many private tutors who couldn't handle him. He was allowed everywhere in the White House and would often interrupt his father's meetings, bring animals inside and charge people to meet his father. He had a speech impediment that often made him impossible to understand. He died at 18 from tuberculosis.
Abraham Lincoln (16th President), was the first president to bring a cat into the White House. When Abe Lincoln assumed office, his son, Tad, asked to bring his cat - named Tabby, on the trip from Illinois to the nation's capital, Lincoln was compelled to agree.