Cheetahs are full of conundrums.
They are the fastest land animal but they tire very quickly.
They have excellent day vision but they can't see at night.
They are the only large cat that cannot roar.
Now you know some things you didn't know about cheetahs.
Happy International Cheetah Day!
A cheetah at the Cheetah Conservation Fund center in Otjiwarongo, Namibia, Aug. 13, 2013. (Jennifer Bruce/AFP/Getty Images)
A cheetah with her two cubs at Masai-Mara game reserve in Kenya, April 26, 2008. (Mladen Antonov/AFP/Getty Images)
An Asian Cheetah at Hamilton Zoo in New Zealand. (Dean Purcell/AFP/Getty Images
Three baby Cheetahs hiss for food at the Muenster zoo in Germany, May 27, 2003. (Torsten Silz/AFP/Getty Images)
Zazi, a mother cheetah, and one of her cubs at the National Zoo in Washington, DC, June 24, 2005. (Win McNamee/AFP/Getty Images)
Three baby Cheetahs hiss for food at the Muenster zoo in Germany, May 27, 2003. (Torsten Silz/AFP/Getty Images)
Three-month-old cheetah cubs at the National Zoo in Washington, DC, July 24, 2012. (T.J. Kirkpatrick/AFP/Getty Images)
Cheetah cubs snuggle in a keeper's arms at the San Diego Zoo, Aug. 11, 200. (Tammy Spratt/Zoological Society of San Diego/Getty Images)
A cheetah wakes in the morning light at the Botswana Predator Conservation Trust in Maun, Botswana, June 10, 2010. (Chris Jackson/AFP/Getty Images)
A cheetah at the French Damien Vergnaud private game reserve in Inverdoom, South Africa, March 22, 2013.
Two cheetah cubs hone their hunting abilities with an impala fawn at Masai-Mara game reserve in Kenya, April 26, 2008. (Mladen Antonov/AFP/Getty Images)
A cheetah carries a live impala fawn in her mouth in Masai-Mara game reserve in Kenya, April 26, 2008. (Mladen Antonov/AFP/Getty Images)
A cheetah at the French Damien Vergnaud private game reserve in Inverdoom, South Africa, March 22, 2013. (Christophe Beaudufe/AFP/Getty Images)
Zazi, a mother cheetah, gets a kiss from her cub at the National Zoo in Washington, DC, June 24, 2005. (Win McNamee/AFP/Getty Images)
A cheetah at the Mashatu game reserve in Botswana, July 24, 2010. (Cameron Spencer/AFP/Getty Images)
World sprint champion Usain Bolt feeds a cheetah cub at the headquarters of the Kenyan Wildlife Service in Nairobi on Nov. 2, 2009. (Roberto Schmidt/AFP/Getty Images)
One of two 9-month-old cheetahs at Zoo Miami in Florida, Nov. 29, 2012. (Joe Raedle/AFP/Getty Images)
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