“…Coccidia are among the most potent pathogenic parasites of hares, and in combination with lung and digestive tract nematodes, they have become a major regulatory factor of the hare population (Chroust, 1984). In previous studies, the prevalence rates of coccidial infections in hares in the Czech Republic were very high, ranging between 92.5 % and 100 % (Ryšavý, 1954;Chroust, 1979Chroust, , 1984Jirouš, 1979;Pakandl, 1990) and likewise in hares from surrounding countries such as Germany, Austria or Poland: between 63.3 % and 100 % (Kutzer & Frey, 1976;Haupt & Hartung, 1976;Forstner & Ilg, 1982;Algöwer, 1992;Böckeler et al, 1994;Pilarczyk et al, 2008). During coprological examination, oocysts of the following species were found: Eimeria coquelinae, E. cabareti, E. leporis, E. babatica, E. europea, E. pierrecouderti, E. macrosculpta, E. orbiculata and E. stefanski.…”