The authors have analyzed animal healthdata for the years 2006 through 2009 as reported by theWorld Organisation for Animal Health (OIE)-the four mostrecent 'World animal health yearbooks' availablewhen the analysis was prepared. The data covers 176countries and economies on 71 livestock diseases (30zoonoses and 41 non-zoonotic diseases) and 8 species orgroups of species (cattle, sheep and goat, swine, poultry,equidae, buffalo, cervidae, and camels). Losses due todeath, destruction or slaughter were distinguished. Intotal, the scope of the analysis comprises about 2.7 milliondata points. On average, over the four years analyzed, theIslamic Republic of Iran, China, and Brazil lost the highestabsolute numbers of Livestock Units (LSUs), while Israel,Iran, and Namibia suffered the highest losses relative totheir livestock populations. Data need to be interpretedtaking into account a potential reporting bias resultingfrom countries' different levels of reportingtransparency and competency. This report is not based on the'real' world animal health situation, but on thebest information available to the authors.