In this Patreon-selected double bill we investigate the tricky task of sexing blue-tongued skinks and the strange underworld of olms.Become a Patreon: https://www.patreon.com/herphighlightsMerch: https://www.redbubble.com/people/herphighlights/shopFull reference list available here: http://www.herphighlights.podbean.comMain Paper References:McKenzie A, Li T, Doneley B. 2022. A comparison of two techniques to identify the sex of the eastern blue‐tongue skink (Tiliqua scincoides scincoides). Australian Veterinary Journal Recknagel H, Zakšek V, Delić T, Gorički Š, Trontelj P. 2024. Multiple transitions between realms shape relict lineages of Proteus cave salamanders. Molecular Ecology 33:e16868. DOI: 10.1111/mec.16868.Editing and Music:Intro/outro – Treehouse by Ed NelsonSpecies Bi-week theme – Michael TimothyOther Music – The Passion HiFi, https://www.thepassionhifi.comIntro visuals – Paul Snelling