ever recorded for the 100-meter dash. and on this day, conditions may be right for a new world record. >> i think it was upper 80s. it was a warm day. >> more than 50 cheetahs have been bred here at the mast farm. >> they are found in africa for the most part. there is a small population of them in the middle east. but they are primarily a savanna species. they like open areas. >> hilker has loved cheetahs her entire life. >> i saw cheetahs in our cincinnati zoo in cages when i was a little girl. >> cheetahs are one of the word's most endangered cats. >> from 100,000 in the early 1900s, down to 10,000 today. that's a terrible slip. >> sarah is one of the stars of the cincinnati zoo's cat ambassador program in schools, helping to raise funds and awareness.