French Bulldog- sudden aggressive tendencies

[Karen]

Thanks for including so much information. It is good he is already neutered, I do not think you need to establish a "pecking order" as much as train him that HE is not in charge, the humans of the house are. How much and what kind of training have you done with him? How much do the kids and boyfriend interact with Isaak? Who feeds, walks, etc?

[Steve Wisley]

Has something changed with the dog? Have you had him checked by a vet to see if there are any health problems? If no to the first two questions it may be time for training for you and the dog. Do you have a professional trainer in your area? If not, I would suggestion you taking the time to learn how to train this dog properly. Sounds like he could be a good dog if he is trained properly. You should take action before someone gets bite and that can lead to more problems. Good luck.