The term neutrophilic dermatitides refers to an ill-defined group of diseases characterized by a predominant neutrophilic inflammatory infiltrate in the lesions. They primarily present with cutaneous manifestations due to accumulation of neutrophils but may affect additional tissues. They have been mainly described in dogs and include pyoderma gangrenosum, Sweet’s syndrome and subcorneal pustular dermatosis. Despite the lack of information regarding their pathogenesis they share many clinical and histopathological features with their human counterparts that are currently classified as autoinflammatory diseases. The clinical and histopathological pictures as well as the response to the immunomodulatory treatments will be address for each condition.