I live in Colorado, and what you describe almost sounds like a pack of dogs and/or coyotes got into the deer & tore them up. We see that frequently with livestock here, particularly sheep.

To me it does not sound like lion or bear. If the damage is occuring on your property, I would call a government trapper (we have them in Colorado, not sure if you have them in your area as well) and have them assess the damage. They can usually tell by the way the kill site looks, what type of animal(s) may have done the killing.

Good luck, & keep us posted when you find out what's going on.

Dogs are a good way to find cats.

Is there any cat sign? Such as:

- scat

- tracks (you mentioned a waterhole) With 15 dead tracks should be in the area.

- Cats kill by going for the throat. Some should have puncture marks around the throat. Scratches may appear on the body.

all had there organs taken out with out braking the ribs up the chest

That is what scavengers do to a carcass.

I'd call the game department, could be disease (blue tongue) or a toxin in the area.

I agree with cowgal that it sounds like a pack of dogs or coyotes. Cats don't hunt in packs, and they kill and eat one animal at a time. Killing numerous animals and only partially eating each one is the sort of thing a pack of dogs would do.

It sounds to me like a deer dump. MoDot has those as well as other agencies. Who's land is it on? Cats cover up their prey and like the earlier posts they don't kill but one at a time. Dogs kill for fun at times. As far as the broken ribs? Sounds to me like vehicle damage. I don't believe a cat will consistanly break ribs
Call the Missouri Dept. of Conservation. They will get you the correct answer to your question, if there is one.

Bigfoot!!! Good Luck

i dont think it is a mt lion prloy yots or dogs

lions do hunt in packs,on more than one occasion i have seen groups of 2 or 3 lions on a kill or stalking game together.Often times cubs will stay with thier mother for a couple years and they also hunt together.Maybe try a trail cam in the area and find out what you are dealing with,never heard of so many deer killed in a small area by domestic dogs or coyotes.