Provided is a pet dental chew (1). The pet dental chew includes a body made of material ingestible for a pet and having a predetermined size insertable to a pet's mouth, a plurality of upper core units (20) formed on one side of the body, a plurality of lower core units (21) formed on the other side of the body and arranged in a pattern oblique to the plurality of the upper core units, and a plurality of air holes (30) formed in the body between the one side and the other side.
