1) Humans are more interested in Bigfoot that we are in porcupines, so your reactive sense that there are more Bigfoot than porcupines is pretty much a typical instance of human-near human bias.

2) We talk more about Bigfoot, have more media attention to Bigfoot sightings, and so forth, and people pay no attention to porcupine sightings and roadkill.

3) Dr. Grover Krantz estimated there were 2000-4000 Bigfoot in the USA, mostly to be found in the PNW.

4) There are millions of porcupines. For example, one recent study estimated there are 1 million porcupines in the state of Wisconsin alone.

5) I did not say that every dead Bigfoot bone would be taken by porcupines. I said it was one explanation for why some of the bones disappear. I also mentioned coyotes and rodents too.

6) Mostly, please note, I referred to porcupines and their incredible liking for eating antlers and bones. The hoarding was only a sidelight that might assist in helping to find the leftovers, just as it has in archaeological research on human bones.

7) I agree, you should be skeptical and whether or not I am scientific enough for you is in the eye of the beholder. But for the record, my undergraduate degree was in anthropology, with a minor in zoology. My graduate degree had much to do with dealing with humans, and figuring out some psychological insights from interviewing eyewitness.

Best wishes,
Loren Coleman