About what percentage of animals hunted in the US are killed for sport vs food? (Is there any real way of knowing?)

Not an accurate answer, but some facts about hunting...
Not only food and sport are given as reasons for the killing, but animals are also killed for their products such as fur, or because they are considered pests (Varmint hunting).

1) "More than 100 million animals are killed each year in the US. This number is staggering, but doesn't reflect the entire situation. It is estimated that for every animal killed and claimed by a hunter, at least two other hurt and unrecovered animals die slowly and painfully from blood loss, infection, or starvation. The 'lucky' ones suffer permanent injury."

"Here are some statistics of animals hunted for 1988-1989, compiled from the Fund for Animals and the U.S. Fish and Wildlife Service. Keep in mind that these numbers only represent the animals killed and claimed by licensed hunters. (these are US stats...if you know of similar Canadian stats, please let me know!)

Rabbit - 25 Million
Squirrel - 22 Million
White-Tailed Deer - 4 Million
Mule Deer - 600 Thousand
Wild Turkey - 350 Thousand
Coyote - 250 Thousand
Antelope - 115 Thousand
Elk - 102 Thousand
Black Bear - 21 Thousand
Caribou - 21 Thousand
Moose - 12 Thousand
Javelina - 10 Thousand
Bighorn Sheep - 2,400
Mountain Lion - 1,500
Mountain Goat - 1,200
Brown Bear - 1,100
Wolf - 1 Thousand
Bison - 750
Wolverine - 700
Musk Ox - 90
The numbers are staggering aren't they? That's not all though...birds aren't spared from cruelty. Here are some stats of the number of birds hunted:

Mourning Dove - 50 Million
Quail - 28 Million
Pheasant - 20 Million
Grouse - 6 Million
Duck - 5.2 Million
Goose - 1.3 Million
Partridge - 1 Million"
Source and further information:
http://www3.sympatico.ca/taniah/animal/hunting.html


2) "Here are the facts:

More than 100 million animals are reported killed by hunters each year. That number does not include the millions of animals for which kill figures are not maintained by state wildlife agencies.
The vast majority of species that are hunted -- waterfowl, upland birds, mourning doves, squirrels, raccoons, rabbits, crows, coyotes, etc. -- provide minimal sustenance and do not require population control.
Each year, more than 40 million animals are killed for their fur: mink, fox, bobcat, beavers, raccoon, lynx, chinchilla, coyote, fisher, marten, muskrat, opossum, otter, skunk, weasel -— the list goes on and on. Each piece of fur trim represents an animal who suffered and died; a full coat represents many animals. There is no reason to kill animals for fashion, and many reasons not to.
Animals suffer for days in steel-jawed leg-hold traps before being killed by one of a variety of methods: standing on their chests to crush their lungs, shooting them, clubbing them, stabbing them, or by other equally cruel methods.
Thousands of animals, referred to by the fur industry as “trash animals,” are caught in traps every year, including birds, reptiles, squirrels, dogs, cats and sometimes even children."
Source and further information:
http://www.da4a.org/sport.htm


3) Here some statistics about hunting:
"2006 National Survey of Fishing, Hunting, and Wildlife-Associated Recreation"
http://outdoorrecreationdata.com/Stats/FHW06.pdf