... > ecological system > ecosphere > biosphere > ecosystem > biocenosis > animal community > animal species > zoophage > hematophage

... > ecological system > ecosphere > biosphere > ecosystem > biocenosis > living organism > animal species > zoophage > hematophage

... > ecological system > ecosphere > biosphere > ecosystem > biocenosis > functional group > trophic group > zoophage > hematophage

... > ecological system > ecosphere > biosphere > ecosystem > biocenosis > functional group > consumers > secondary consumer > zoophage > hematophage

... > ecological parameter > trophic structure > trophic chain > trophic level > consumers > secondary consumer > zoophage > hematophage