Conversation so far:
Where was Theodore Roosevelt born?
Theodore Roosevelt Jr.
was born on October 27, 1858, at East 20th Street in New York City.
Who was his mother?
socialite Martha Stewart "Mittie" Bulloch.
What type of work did his father do?
businessman and philanthropist.
Did Roosevelt have any siblings?
He had an older sister, Anna (nicknamed "Bamie"), a younger brother, Elliott, and a younger sister, Corinne.
What were his interests in his early life?
Roosevelt's youth was largely shaped by his poor health and debilitating asthma.
Did he have any hobbies while growing up?
His lifelong interest in zoology began at age seven when he saw a dead seal at a local market.
Did he ever overcome his asthma and poor health?
Doctors had no cure.
Were there any influential figures in his early life?
Roosevelt's father significantly influenced him.
Are there any other interesting aspects about this article?
after obtaining the seal's head, Roosevelt and two cousins formed what they called the "Roosevelt Museum of Natural History".

Question: What did he do with the seal's head?
Self-contained rewrite: What did Theodore Roosevelt do with the seal's head?