Explanation:
John Quincy Adams was the 6th President of United States of America. He was a famous diplomat and diarist. He was most famous for keeping an alligator in the White House. This alligator was gifted to him from Marquis de Lafayette, the revolutionary war hero. It is believed that Adams enjoyed the showing of the scary-looking animal off to the disbelieving White House visitors.
And Herbert Hoover was the 31st President of the US. Hoover's son has two alligator as his pet and they were kept at the White House.
