Chullin 49: Internal Injuries, Exposure

Today's daf considers damage done to internal organs and the determination of fitness for consumption. If a needle perforates any part of the animal, it is considered to be kosher.  The injury caused by a needle is almost superficial.  If there is a pit in an animal - an olive pit or another pit - perhaps in the gall bladder ducts, we are permitted to assume that the pit would have passed and would not cause an injury that would render the animal a tereifa.

The rabbis consider whether or not the timing makes a difference - if the animal is rendered imperfect after its slaughter, does it become a tereifa at that point?  Different examples are provided.  Further, fat could change the ruling.  The rabbis assert that kosher animals have fat that will seal a protrusion, keeping the animal kosher.  Non-kosher animals have fat without that property.  Rav Sheshet and others argue that all fat can seal an internal injury.

The rabbis also discuss exposure.  While only wine, water and milk are liable to exposure - to become forbidden due to the possible venom of a snake in an unprotected container - honey could be a problem as well.  The notion of damaging a food item after its production is of great importance both for reasons of kashrut and safety.