Question
Sha'atnez is a mixture of wool and linen. The Torah forbids wearing any clothing that contains both wool and linen. Why not? What is so special about wool and linen? Please explain this prohibition. Are there other mixtures that also cannot be worn? Thanks.  
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Question
This week we read in the Torah portion of Ki Teitzei (Deut. 22:6-7) that before taking the eggs from a nest there's a mitzvah to send away the mother bird. How do we get eggs today from a hen house? Are the chickens removed? If not are the eggs still kosher?

Question
This week we read in the Torah portion of Ki Teitzei (Deut. 22:6-7) that before taking the eggs from a nest, there's a mitzvah to send away the mother bird. How do we get eggs today from a hen house? Are the chickens removed? If not are the eggs still kosher?

Question
I have been told by various rabbis (and by the books, articles, and web-sites which they refer me to) that a person who owns the animal must always feed the animal before taking his/her own food in order to avoid any cruelty to animals. However, I am recently informed by professional dog-trainers (and by the books, articles, and web-sites which they refer me to) that this must not be done in the case of dogs — because a dog’s nature is such that the dog always believes “whoever eats first is the leader, the owner, the one who must be obeyed”: therefore, I am told, a dog which eats before its owner eats will become untrainable and will rebel against its owner, perhaps even attack its owner. (This was shown to be in various scientific textbooks and documentaries on dogs’ instincts, abilities, and behavior is this regard. Dogs have no ability to set aside these particular instincts.) Therefore, in thé case of a dog (knowing these facts about the nature of dogs), is it permissible for the owner/trainer to eat first, so that the dog understands that the one in charge is the person (the owner/trainer) and not the dog?

Question
If a person has a physical disability (such as a peptic ulcer, hyperacidity, diabetes) so that he cannot fast - then what he can do? Can his parents or brother fast for him?