Cinder is 12 months here. She is a Bull Mastiff/Boerboel (South African Mastiff) breed. I grew up with Boerboel in South Africa and they're dependable family dogs.
Mastiff are origanilla bred to be hold dogs. Guards of earlier estates caught poachers with dogs. Only trouble was that they were mauled so bad that they didn't survive to be put on trial. So these Mastiffs were bread to hold the poacher untill the guard can arrest him. The dogs were also transported to South Africa and went through a couple more mixes untill it became the well known Boerboel (farmer's bulldog). Bred to fit into families and also be a guard dog. Boerboels closely watch his owner's non verbal and verbal communication to decide if the owner is in danger and should be guarded. Otherwise it just relaxes. They very good with kids