This is new information to me and a great example of the internet having a positive role in my life. I wish it was all this way. Thanks for the mini-lesson.

I don't understand how the length of the digestive tract would have an effect on spoiled raw meat hosting untold amount of bacteria.

I not sure this is true.

As I understand, humans have an extremely acidic stomach compared to other animals, even carnivores. Our stomach acid is on the level of scavengers, and this is to kill bacteria and parasites in the food we eat. Humans could be more tolerant of spoiled food than most other species.

The modern western diet/lifestyle can damage our digestive tract in ways that affect our pH and microbiome making us susceptible to what we should normally be tolerant of. Anyone taking antacids or dealing with heartburn type issues I would expect to more vulnerable to food poisoning since any pathogens can more easily pass deeper into their digestive tract.

The short digestive tract in a dog is all that is needed to extract nutrients from animal sources, digesting plants requires help from a microbiome and they need somewhere to live and do their work, this is why plant eaters have extensive digestive tracts that are not very acidic so they don't kill them off. Humans (not sure about other animals) neutralize the "chime" exiting your stomach so that it's pH is appropriate for the microbiome living in the intestines.

The human digestive tract suggest sit evolved for adaptability, a healthy human can safely eat anything from carrion (not saying it's fine, just that we evolved to be able to survive it), be a vegetarian, or eat mostly meat and thrive.

Why is this so highly up voted? Is there any data backing this up? This sounds eerily to the 5 second rule... If you pick up up quick enough it's safe!

I'd really love some sources on this.

might cause adverse reactions in humans, such as allergies or severe skin reactions.

This is true for every antibiotic used on human beings as well. All of them can give you severe skin reactions or you might develop potentially deadly allergies against them. It might be rarer with the ones we use regularly, I don't know, but it happens.

Well that's how I got thinking about this - they're not fine to eat some foods which seem innocuous to a human, it could kill them, like grapes. Some commenters here have talked about sort of the condition of food - if it's old, spoiled, has bacteria or maybe parasites. But I'm curious specifically about food that's inherently toxic to humans, even in pristine condition, which isn't to dogs.

How can you know? According to the documentary, 2 girls 1 cup, it's very tolerable for humans.

Good job reading the post. /s