The nastiest animal to eat is pork followed by chicken.
Historically, pork was believed to be the 'dirtiest' meat.
Recently however, chicken has been dubbed the most toxic meat.
According to PETA (People for the Ethical Treatment of Animals) chickens are being dosed with antibiotics containing arsenic, along with other animals which are being raised for human consumption.
Among mammals that Leviticus cites explicitly as an example of unclean is the camel, because it ruminates but does not have a cloven hoof; the hyrax and the hare are also explicitly given as an example of being excluded as kosher on the same grounds.
Some of the grossest meat to eat includes.
Potted Meat.
Fermented Salmon Heads.
Jellied Moose Nose.
Bat Paste.
Hasma.
Haggis.
Cockscomb.
Black Pudding. This dish is comprised largely of blood drawn from pigs, cattle or sheep.
Animals that should not be eaten include.
Animal lungs (as found in haggis) Animal lungs are a primary ingredient in haggis and the reason why we can't have this Scottish delicacy in America.
Casu Marzu: a Sardinian cheese filled with live maggots.
Shark fins.
Bushmeat: meat from African game animals. ...
Pufferfish.
Horse meat.
Hallucinogenic absinthe.
Sea turtle meat.