Conversation so far:
What kind of horse was he?
Seattle Slew was a dark brown colt with a small white patch of hair by his left rear hoof.
Are there any other interesting aspects about this article?
Their friend Dr.
Jim Hill, a veterinarian, recommended that they buy Seattle Slew.
How much did he cost?
Seattle Slew, who was sold for $17,500 (equivalent to $80,000 in 2017).
Was there a service or memorial for him?
CANNOTANSWER.

Question: What is something notable about is early career?
Self-contained rewrite: What is something notable about Seattle Slew's early career?