Alpine Crocodiles

Crocodile electric locomotives are so called because they have long "noses" at each end, reminiscent of the snout of a crocodile. These contain the motors and drive axles, and are connected by an articulated center section. The center section usually contains the crew compartments, pantographs and transformer.
The original "Crocodiles" were the series SBB Ce 6/8 II and SBB Ce 6/8 III locomotives of the SBB, Swiss Federal Railways, built between 1919 and 1927 (above). These locomotives were developed for pulling heavy goods trains on the steep tracks of the Gotthardbahn from Lucerne to Chiasso, including the Gotthard Tunnel.
Very similar locomotives were used in Austria as Austrian Federal Railways (Österreichische Bundesbahn) classes ÖBB 1089 and ÖBB 1189 (below), and are often known as 'Austrian Crocodiles'.

Source: Wiki

Images: Chris Walters @ trainspo.com & voba-medien.de