The alpine chamois, aka isard

From a note about my late friend Steve Isard: his family name before was Issersky or Isserski, altered on immigration [to Isard] But the name Isard was not just picked out of a hat; isard is the name (in several languages) of an actual creature, an alpine goat, fleet of foot: The Pyrenean chamois (Rupicapra pyrenaica) is a goat-antelope that lives in the Pyrenees and Cantabrian Mountains of Spain, France and Andorra, and the Apennine Mountains of central Italy (from Wikipedia) — named isard in Catalan, Occitan, and French xx