• [Wiki] http://en.wikipedia.org/wiki/Vulpes_vulpes.
• [AnAge] http://genomics.senescence.info/species/entry.php?species=Vulpes_vulpes.
• [KolbHews1980] Kolb, H. H. and Hewson, R. (1980). The diet and growth of fox-cubs in two regions of Scotland. Acta Theriologica, 25:325--331.
• [Kooy2010] Kooijman, S. (2010). Dynamic Energy Budget theory for metabolic organisation. Cambridge Univ. Press, Cambridge.