retrieved peer-reviewed English language scientific articles and
book chapters dated 2000–2014 through the ISI Web of Knowledge
(http://www.webofknowledge.com) and the IUCN/SSC Cat Specialist
Group Digital Library (http://www.catsg.org). Only recent publications
were considered to assure the most accurate and consistent data on
predictors and confounders, especially on prey biomass, prey density,
and cat density, which are particularly demanding for up-to-date
research techniques.