I should explain that I interpret the chart the way I did in the above post due to seeing a scanned image of the form. In that image, the 'other' column breaks down where these animals came from and the vast majority are there only for spay/neuter and are reclaimed by the owners. This isn't explained in the online version of the chart. Here is a link to the PDF file...
http://www.petakillsanimals.com/down...llsAnimals.pdf
I will say up front that the source of this is the CCF through a public records request. I'm sorry that I can't find a more agreeable source, but this is the only place where I've found what appears to be the actual document.