Not an amphibian, but their chirping sometimes suggests otherwise.
Description
These insects reach a body length of 3.5 to 5.0 centimetres, the females are smaller than the males. The body is reddish-brown to black and dark brown in colour. Their front legs, which have been transformed into strong digging shovels, make them the only species in their family to be unmistakable in Central Europe.
Habitat
Like all mole crickets, European mole crickets live in self-dug burrow systems in the ground.
Call
During the mating season, they produce long-lasting, buzzing "rrrrrr" noises through stridulation.
Breeding call example:
Wikimedia Commons Lizenz BioAcoustica 899 CC Attribution 3.0 Unported
Source: The text is an excerpt from Wikipedia (https://de.wikipedia.org/wiki/Europäische_Maulwurfsgrille) and is available there under the licence "Creative Commons Attribution/Share Alike". Status: 10 July 2023.