Oh my God.

Never want to try what you have mentioned. In my humble opinion, these are not even delicious. I saw some people who were eating crocodile soup. Apart from the savor problem, I think food is a very strategic issue in our life. People are different in terms of body type, as case in point,  it is dramatically absurd to feed all children the same food in a family due to the differences of sapor. We have our traditional foodstuffs in Iran and they are compatible with our sapors and the body types. Personally speaking, when I am in a foreign country I have many problems to find a proper restaurant. For example, I'm reluctant to eat Chinese dish like Raw fish, monkey brain, pickle cockroaches, etc. However, they may so delicious for indigenous people. 

Nobody eat chicken feet in my country (or at least I know not a single person doing it). I wonder what sort of taste chicken feet have, is that good? And how you cook that. I was going to say that it's rather strange to eat chicken feet but I've just remembered I ate snails for Christmas so .... :) 

But we eat organs like liver, tripes etc... That's quite popular though not the whole population eat that sort of food !