Nik williams

Hi im a first time owner of a staffy hes 2 yrs 9 months old ive had him for 17 months of his life he was seriously abused by first owners hes very well behaved after a lot of care and work but keep having a problem with him being reactive to other dogs when out walking him i have made some progress but a lot of it is fear and anxiety i think was ok when first had him until a dog barked and growled at me and dave my staffy stood in front of me and barked back been like it since then any tips or help would be much apprecisted thanks