resembling or pertaining to a bulldog; "A bulldog appearance"
throw a steer by seizing the horns and twisting the neck, as in a rodeo
attack viciously and ferociously
stubbornly unyielding; "dogged persistence"; "dour determination"; "the most vocal and pertinacious of all the critics"; "a mind not gifted to discover truth but tenacious to hold it"- T.S.Eliot; "men tenacious of opinion"
a sturdy thickset short-haired breed with a large head and strong undershot lower jaw; developed originally in England for bull baiting
