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Grasshopper Mice (Onychomys spp)
grasshopper mouse

DESCRIPTION: Wt=0.75-1.0 oz (22-30g); L without tail = 4.6-6.4" (119-163mm), tail = 1.25-2.6" (32-68mm). Overall grayish or cinnamon above and white below. Tail is short (between 1/3 and 1/2 of body length), bicolored, and thick.
NATURAL HISTORY: Mostly carnivorous. The parents actually teach their offspring how to successfully capture and eat Pinacate Beetles (stick their abdomen in the soil before being squirt and then do not eat the glands at the base of the abdomen) and scorpions (remove stinger). Male remains with female and offspring, using a high-pitched howl to signal other males to stay out of his territory. Thus, grasshopper mice can be thought of as the wolf of the rodent world (carnivorous, travel in groups, howl, and teach their offspring how to hunt). Grasshopper mice are mostly nocturnal, staying in a burrow during the day.