None.
Chickens do not have hooves at all and do not chew their cud. They are however considered to be Kosher animals according to Jewish tradition.
Every Pagan is different.. some are vegetarian, vegan, kosher, carnivorous. It depends on the particular Pagan.
No. Cows are herbivores thus will not harm nor eat chickens. Chickens are also not carnivorous, however they will eat bugs like grasshoppers and crickets, as well as grass and grains.
Chickens are kosher, if properly slaughtered. Jews have traditionally eaten chicken. Leviticus 11 and Deuteronomy 14 provide lists of unclean birds without giving explicit rules. By inference, carrion eaters and carnivorous birds are unclean. The birds permitted for Temple sacrifices are, by definition, clean, since no unclean things were allowed as sacrifices. Doves and pigeons (another kind of dove) are permitted as sacrifices. Chickens behave more like doves than the forbidden birds, so that matches the tradition. Rabbis had to grapple with this question fairly seriously when the European community first encountered turkeys imported from the new world. The conclusion was that turkeys are kosher too.
The Schechter Brothers were instrumental in ending the National Recovery Act (1935) because they claimed that regulations imposed by the NRA interfered with the production of Kosher chickens-which was their livlihood.
These days, mostly chickens, ducks, geese and turkeys. Pigeons are kosher, as are many songbirds. Birds of prey and scavengers are explicitly forbidden, as are flightless birds.
Kosher meat might be available at the local super market but usually only in areas with a relatively higher Jewish population. For meat to be kosher, it has to come from a kosher animal (including cows and chickens) and it has to be killed a specific way under the supervision of experts (who might be rabbis, but not necessarily) who have been certified as such by various kosher organizations. Kosher meat is more expensive than regular meat since it includes extra verification, is more labor intensive and some animals on the assembly line might not be suitable to be kosher (was sick, had worms, and other reasons).
Technically all living organisms are related. Birds (including chickens) are, however, descended from reptiles. Birds evloved from small, carnivorous dinosaurs in the late Jurassic period.
It needs to be cooked in a kosher vessel and have kosher ingredients. If purchased, it (or the bakery) should have kosher-certification.
Yes and no. There are many recipes that can be made kosher with kosher substitutes.
It is kosher so long as it is certified kosher.