In the first game of the series, Sven can also mate with the dog while the latter is asleep, but only on higher levels (from level 3 upwards in the free version, later in the full version). This is particularly dangerous as the player has to estimate when the dog will wake up, unless he wishes to risk a life. However, it will also result in the player getting many points (Just watch the icon or else Sven will be turned into the female in the encounter.).