Glad you found it intersting Ken, here is a bit more
I dug up some of the background on this work including the photo of the extreme position. A lot of what is in this photo is what gave me a clue as this is where he was just before the moment I used in the painting. I also found the pastel, and more important an analysis I did of the compositional movements which is how I got the dynamic tensions. ( See I mark up my own work in pink and blue too
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You'll notice that the two main movements of diagonals and the curving dust, are marked, and the place they cross most strongly is where the cat is, checking the long curve of the lower dust. It took me longer to do the dust than the cat in this, I've studied dust a bit too, I really love watching the forms and movements, mostly with the dust the horses make in the pasture next to where I live. It has to have light and shadow and cast shadows within the movements to work. I had to use the photos for this, the movements are too complex to keep in the mind, but it's a great way to practice values.
In the photo I got clues to apply, clearest focus is on the head, only a few edges clearly defined, esp with a supporting leg, the back lighter in value and the spots blurred. These are also elements I discovered in Schatz's paintings.
If you ever want info on cheetah, including how many spots are on the coats( around 600 per cat) there is a thread here
http://www.wetcanvas.com/forums/showthread.php?t=432194 where I posted my journey to master what I think is the most difficult of the big cats. The spots are a whole chapter alone, imagine, for realism,
each spot has placement, perspective and value to consider, and a cheetah has more spots than any other cat, if you don't get them right all the underlying form is destroyed.
In the photo, you see a big chain link fence, this is the outside of their enclosed yard, they were actually free in the open for the run.
The pastel called "The Chase" is smaller than the oil 10.5 x 22 , but the composition is the same, I sometimes like to do two versions, one in oil one in pastel, as it helps me learn how to handle technical issues in each one and compare strengths and weaknesses in my skills.