Switzerland's cable cars, funiculars and cogwheel mountain railways are, on the whole, dog-friendly, generally on the same fare terms as SBB trains: a small dog under 30cm in a carrier travels free, a larger dog needs its own ticket and a seat (or standing spot) that keeps the way clear for other passengers. Keep dogs leashed and under control, as on any train — individual operators can post stricter rules of their own, so check at the station if in doubt.

Can dogs go all the way to Jungfraujoch?

Dogs are allowed all the way to the very top, Jungfraujoch (3,454m) — there's no altitude ban. The lower, free sections (Interlaken Ost to Lauterbrunnen to Kleine Scheidegg or Grindelwald, and the Eiger Express gondola) work the same as the regular SBB rule, but the final stretch up to Jungfraujoch needs a separate dog ticket, bought at any Jungfrau Railway station counter rather than online — travellers have reported paying roughly CHF 30–35 return for it. Confirm the current fare directly with Jungfrau Railways before you go, since prices change.

Are dogs welcome on funiculars and cogwheel lines?

Below Jungfraujoch, popular routes and viewpoints — funiculars up to city overlooks, most cogwheel lines into alpine villages — are straightforward, and a leashed dog is a completely normal sight on board.