The zoos involved in the call for the earlier reopening are: Zoo Liberec, Zoo Zlín, Safari Park Dvůr Králové, Zoo Ostrava, Zoo Olomouc, Zoo Brno, Zoo Jihlava, Zoo Vyškov, Zoo Hodonín, Zoo Hluboká and Zoo Děčín. The list of signers does not include Prague Zoo, which is the largest in the Czech Republic.