#4 Actor George Clooney and the Potbelly Pig, Max

Max passed away at the age of 18 in 2006.
#5 Poker champion Dan Bilzerian and his pet goat, Zeus

#6 First Lady of the United States Grace Coolidge and domestic raccoon, Rebecca

The Coolidge family also had a pygmy hippopotamus, two lion cubs, a wallaby kangaroo, and a bear.