This list of mythical creatures that begin with this letter and I am constantly gathering information from each continent, and is continually being updated.
Piatek (Armenian)
The Piatek exists in Armenian folklore as a large mammal from very ancient times. This animal had a very large beak and strange hair which stood on end. This is all that remains today of any description of such a creature, as it can be found only in one Armenian tablet.
This animal may have been one of the creatures on the mythological Tomikland Island, however that is just speculation. Today no such creature exists and it is still to be proven that it ever existed. The Piatek is a large mammalian creature similar to a wingless griffin.