Onychomys leucogaster (northern grasshopper mouse)
| Class | Mammalia |
| Order | Rodentia |
| Family | Cricetidae |
| Genus | Onychomys |
| Species | Onychomys leucogaster |
| Common | northern grasshopper mouse |

| Diet | insectivorous, carnivorous |
| Habitat | grasslands, open bush lands. Usurps other mice burrows, emits howling vocalizations. |
| Description | Subfamily: Neotominae Short tail, length ~1/3 of body and head, tail relatively thick. Body large cp. to P. maniculatus. Total length ~14 cm, tail ~4 cm. |
| Skull Characteristics | Skull: Length ~2.6 cm. No deep groove in incisors (cp. Reithrodontomys). Coronoid process higher than condyloid process (contrast similar species). Molars as other small Neotominae: Cuspidate with 2 longitudinal rows of cusps (cp. Muridae) |
| Notes | Links to more species information: |