EntityQ994097· pop 8· linked from 64 articlesNuptial padSign in to savesecondary sex characteristic on some mature male frogs and salamandersConnectionsAnuraEntityAmphibiaEntityInternational Standard Book NumberEntityWayback MachineEntityCaudataEntityepitheliumEntityforearmEntityandrogenEntityLamarckismEntityedible frogEntityAlytesEntitysecondary sex characteristicEntityrough-skinned newtEntityamplexusEntityPaul KammererEntitymucous glandEntityHumeral spineEntityCategoriesAmphibian anatomyMatingSexual anatomy