This is the SBB De 6/6, or "Seetal-Krokodil", a normal gauge version of the RhB crocodile. Three were built in 1926 for the Seetal line, which has a special, narrow clearance (it runs just beside a road and thus can't be widened)

This is the "BVZ-Krokodil", or class HGe 4/4 I of the Brig-Visp-Zermatt railway from 1929-1930. I'm not sure whether it was articulated when built, it isn't now - not a 'true' crocodile. It has only four axles, but it is also a rack railway locomotive.

_{*Lunatic*, n.
One whose delusions are out of fashion.}