Each day was an adventure for President Theodore Roosevelt. When he was a kid, he kept turtles in the bathtub and frogs under his cap. As an adult, he was a cowboy, a river explorer, and a big game hunter. Sometimes he would go on marches through deep puddles and icy rivers -- just for fun! TIME For Kids® Biographies help make a connection between the lives of past heroes and the events of today. When Teddy became president, Americans were looking ahead with excitement to the twentieth century. Teddy's spirit and dreams helped make the United States one of the greatest countries in the world.