no words of advice to give. My boys, Sebastian and Oliver, started fighting really bad too and they are also 2. It also would start because of territory (namely trying to claim me or my lap) and I could usually stop it if I saw the beginning signs. I just got them both neutered hoping that will fix this. Are Wilbur and Layla fixed? If so, then all I can say is an age thing I've heard bullies go through at around the age of 2. Hopefully someone will come along with suggestions.