b ackground: we attempted to determine the prevalence of hepatozoon spp. infection in mashhad, northeast of iran, via blood smear parasitology. m ethods: the prevalence was investigated by examination of blood smear parasitology, using blood samples collected from 254 dogs (51 strays and 203 privately owned-dogs). r esults: two stray dogs (2/51; 3.92%) and two privately-owned dogs (2/203; 0.98%...