James Douglas Muir Leno is an American television host, comedian, and writer. After doing stand-up comedy for years, he became the host of NBC's The Tonight Show with Jay Leno from 1992 to 2009.
With global warming threatening their once-icy domain with widespread flooding, Manny, Sid and Diego set out to find a safe haven. Along the way, another mammoth, who thinks she is an opossum, joins the travelers on their perilous quest.