“…This has been the case with other parasites that have direct life cycles. 16 Physical features of the mara enclosure, such as natural ground, relatively high density of animals, eating off the floor, and animals of different ages and species, could affect the density of cyst shedding, viability of the cysts, and transmission dynamics. Indeed, in a study on the prevalence of Giardia in pet chinchillas, the higher prevalence found, compared to that in other studies in which the animals were individually housed, was associated with most animals being housed in groups.…”