I'll take a stab at this. I would say that yes, a co and a fila can co-exist peacefully if raised together from a young age, or if both dogs are trained enough with an owner who is experienced enough to introduce them properly. If you live in the Bahamas, i would say opt for the fila. They were bred and created in a tropical environment, for a tropical environment, to thrive in a tropical environment. I'm sorry that i can not give you an accurate pro/con discussion on their differences, as i don't have enough experience with the fila to do this. Plus, I'm biased towards the Kavkas Volkodav. Maybe someone else will see this and answer. I hope i was helpful in some way. Mike