silhouette, contour of the dog muzzle boxer breed of black color on a white background surrounded by lines of various widths

abstract animal background black boxer breed bulldog canine color contour cute design dog domestic ears face friend graphic guard head hunting icon illustration image isolated lines logo mammal muzzle one outline pedigree pedigreed pet picture pitbull portrait pose puppy purebred sad security silhouette single sketch strong stylish surrounded symbol tattoo various vector white widths