Cerf élaphe
Mammals are often difficult to find, but are present nonetheless. Fieldmice are common in the woodlands, whereas rabbits, foxes, stoats, shrews, and bats at night, are often sighted in the boglands. Red deer once roamed Connemara but were extirpated from the area approximately 150 years ago. An attempt was made to reintroduce red deer to Connemara and a herd was established within the park. Nowadays, the largest mammal in the park is the Connemara pony.