A griffin is a fabulous animal, symbolically significant for its domination of both the earth and the sky - because of its lion's body and eagle's head and wings. It has typological antecedents in ancient Asia, especially in the Assyrian k'rub, which is also the source of the Hebrew cherub.
A common cold can last from 3 days to a week but never more than two weeks because then you can have something totally different from a cold, if it does last for more than two weeks I suggest going to a doctor. Depending on the severity of it, I believe that colds last anywhere from 3 to 7 days!
Under normal circumstances, how long should a cold last? Well, the usual duration of a common cold spell is about 5-7 days, which should not extend beyond 10 days under any circumstances, if the individual suffering from it is of normal health and has a fairly strong immune system.