Liberal Jews have a variety of degrees to which they follow Kashrut. Some do so strictly. Some follow the laws at home, but not outside the home. Some follow laxer standards, but consistently everywhere. Some do not follow the rules at all. I depends entirely on the person.
Orthodox Jews, as well as other Jews, are able to do whatever they want to do. Those Jews ... Orthodox, Conservative, Reform, or any others ... who decide to observe and adhere to the formal standards and teachings of Judaism do not eat pork. In that respect, they are mirrored by Muslims and Hindus. Orthodox Jews, though, are more likely to observe and adhere to that standard than Liberal Jews (like Conservative, Reform, and Secular Jews).
No, the Reform and Liberal movements has the largest number of followers.
Jews who eat kosher will not eat snails since snails are not kosher. However, not all Jews eat according to the laws of kashrut, so some Jews do eat snails.
Observant Jews do not eat crayfish.
Muslims and Jews don't eat pork. Muslims eat shellfish, but Jews don't.
Orthodox Jews are only allowed to eat kosher foods.
Jews eat food -- observant Jews attempt to keep the laws of kashrut by eating kosher food. When? Many Jews eat 3 meals a day with occasional snacks. Some skip breakfast.
no, it is because God's Torah forbids Jews to eat pork. Non-Jews are permitted to eat it.
Yes, Jews can eat chicken. Religiously observant Jews would require that the chicken be kosher.
Yes, Jews; as well as Muslims; can eat duck meat,
Religiously observant Jews will only eat foods that are kosher.
The Torah states that Jews should eat kosher food.