someone who is easily controlled by another person

= der Schoßhund

Sample Text:

"Only 14% of Russians believe Medvedev is the real president," says Lilia Shevtsova of the Carnegie Moscow Centre. "The population considers him to be a non-entity, a shadow and simply Putin's LAPDOG."(BBC News)---"The EU cannot continue to remain silent in the face of these ongoing revelations. It gives the impression we are little more than a LAPDOG of the United States," said Jan Albrecht, a German Green in the EU parliament.(Reuters news service)