 They were also generally known for their balance and acceleration.When Northern Dancer was 20 years old (an advanced age for a stallion), his owners turned down an offer of US$40 million from a European syndicate for him.Northern Dancer's entry into stud service was ranked number 28 in "Horse Racing's Top 100 Moments", a 2006 review of American racing in the 20th century by "The Blood-Horse" magazine.