карманный песик (в переносном смысле: человек, который всегда следует за и подчиняется другим)
He was no more than a lap dog to the powerful politician.
Он был не более чем карманным песиком для могущественного политика.
Definitionen
A 'lap dog' refers to a small dog that is often kept as a pet and is fond of sitting on its owner's lap. Figuratively, it can also describe a person who is overly submissive or obedient to someone in authority, often to the point of lacking independence.