Griffindore

Hi, I live in an oak tree area. In front of my house are two enormous oak trees. One has lots of Capricorn beetle holes , some brances have been cut of, but has leaves. The other has NO leaves at all this year, has crack of a mtre up the bark, bark depth, at its base. My neighbour says it could be very dangerous and should be felled. I am in shock. Advise sought ?