Kashrut
Among the numerous laws that form "kashrut" are prohibitions on the consumption of certain animals (such as pork and shellfish), mixtures of meat and milk, and the commandment to slaughter mammals and birds according to a process known as "shechita". There are also laws regarding agricultural produce that might impact the suitability of food for consumption.
Yehowists
Yehowists strictly follow a food diet, which in general is similar to the Jewish one. In particular eating pork, hare and other seafood is strictly forbidden.