Conversation so far:
Where was Theodore Roosevelt born?
Theodore Roosevelt Jr. was born on October 27, 1858, at 28 East 20th Street in Manhattan, New York City.
Who was Theodore Roosevelt Jr.'s mother?
Theodore Roosevelt was the second of four children born to socialite Martha Stewart Mittie Bulloch and businessman and philanthropist Theodore Roosevelt Sr.
What type of work did Theodore Roosevelt Jr.'s father do?
Theodore Roosevelt Sr. served as a member of the plate-glass importing business Roosevelt & Son.
Did Theodore Roosevelt have any siblings?
Theodore Roosevelt had an older sister, Anna (nicknamed Bamie), a younger brother, Elliott, and a younger sister, Corinne.
What were Theodore Roosevelt's interests in his early life?
Theodore Roosevelt's youth was shaped by his poor health and debilitating asthma. He repeatedly experienced sudden nighttime asthma attacks that caused the experience of being smothered. Doctors had no cure.
Did Theodore Roosevelt have any hobbies while growing up?
Having learned the rudiments of taxidermy, Theodore Roosevelt filled his makeshift museum with animals that he killed or caught; he then studied the animals and prepared them for exhibition.
Did Theodore Roosevelt ever overcome his asthma and poor health?
Hiking with his family in the Alps in 1869, Theodore Roosevelt found that physical exertion minimized his asthma
Were there any influential figures in Theodore Roosevelt's early life?
Theodore Roosevelt's father significantly influenced him. His father was a prominent leader in New York's cultural affairs; he helped to found the Metropolitan Museum of Art.
Are there any other interesting aspects about Theodore Roosevelt's early life besides his birth,parents, siblings, asthma, hobbies, and early influential figures?
Theodore Roosevelt's lifelong interest in zoology began at age seven while seeing a dead seal at a local market.

Question: What did he do with the seal's head?
Self-contained rewrite: What did Theodore Roosevelt do with the seal's head from the local market at age seven?