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|Sound produced||yes, active sound production|
|Type of sound produced||rattling sounds, snaps or cracks (very broadband)|
|Sound production organ||probably teeth|
|Sound mechanism||not known, but probably stridulation of teeth or bones|
|Behavioural context||spontaneous nocturnal sound production associated with foraging activities|
|Reference||Tiepelt, H., 2005|
|Remark||outdoor recording (freshwater lake)|