aithníonn ciaróg ciaróg eile

== Irish == === Etymology === Literally, “a beetle recognises another beetle”. === Proverb === aithníonn ciaróg ciaróg eile it takes one to know one === References === Ó Dónaill, Niall (1977), “ciaróg”, in Foclóir Gaeilge–Béarla, Dublin: An Gúm, →ISBN