Do Fila Brasileiros bark a lot?

No, despite their history as guard dogs, Fila Brasileiros don’t tend to bark a lot. Instead, they tend to be relatively quiet dogs, barking mainly to alert their pet parents of potential threats or when they sense something unusual. 

Their protective nature means they will bark when they feel it’s necessary, but they are more often reserved and typically only bark occasionally. Consistent positive reinforcement training, thorough early socialization, exercise, enrichment, and rest can help prevent or reduce excessive barking behavior as well.