Southern Grasshopper Mouse Trivia

Southern Grasshopper Mouse

Do you think you know the southern grasshopper mouse? Test your knowledge of southern grasshopper mouse FaunaFacts with this trivia quiz!

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Southern grasshopper mice are extremely fertile.
True
As with many rodents, southern grasshopper mice are extremely fertile.
False

When does the southern grasshopper mouse howl?
Threatened
Standing on their hind legs with their noses pointed upwards, they give this call when faced with an adversary, including other grasshopper mice, or prior to making a kill.
Hunting
Standing on their hind legs with their noses pointed upwards, they give this call when faced with an adversary, including other grasshopper mice, or prior to making a kill.
Mating
Attracting a Mate

The southern grasshopper mouse has specialized physiological adaptations to arid conditions.
False
The southern grasshopper mouse has no specialized physiological adaptations to arid conditions.
True

What is the southern grasshopper mouse’s mating system?
Monogamous
The southern grasshopper mouse is usually known to be a monogamous species.
Polygynous
Polyandrous
Polygynandrous

The southern grasshopper mouse is aggressive.
True
The southern grasshopper mouse is an extremely aggressive predator and hunts its prey like most sophisticated predators.
False

Southern grasshopper mice are territorial.
True
Adult males tend to be highly territorial and guard their large territories fiercely against all intruders.
False

What is the southern grasshopper mouse’s diet?
Omnivorous
Southern grasshopper mice are omnivorous.
Carnivorous
Herbivorous
Unknown

What is the southern grasshopper mouse’s social system?
Solitary
Southern grasshopper mice are solitary animals. They may, however, live in male-female pairs year-round, although this seems to shorten the lifespan, as one of the two partners inevitably kills the other.
Social
Social Males, Solitary Females
Solitary Males, Social Females

What kind of animal is the southern grasshopper mouse?
Terrestrial
The southern grasshopper mouse is terrestrial.
Arboreal
Aquatic
Fossorial
Common
The southern grasshopper mouse is fairly common throughout its range.
Uncommon
Rare
Extinct in the Wild

What is the southern grasshopper mouse’s scientific name?
Onychomys torridus
The southern grasshopper mouse’s scientific name is Onychomys torridus.
Onychomys arenicola
Onychomys leucogaster
Osgoodomys banderanus

To what continent is the southern grasshopper mouse endemic?
North America
The southern grasshopper mouse is found in North America.
South America
Europe
Australia

What is the southern grasshopper mouse’s evaluation on the IUCN Red List of Threatened Species?
Least Concern
The southern grasshopper mouse is listed as Least Concern on the International Union for Conservation of Nature and Natural Resources (IUCN) Red List of Threatened Species in view of its wide distribution, presumed large population, and because it is unlikely to be declining at nearly the rate required to qualify for listing in a threatened category.
Near Threatened
Vulnerable
Endangered

On average, what percentage of the southern grasshopper mouse’s body length is the tail?
30%
The short, broad tail is club-shaped and longer than half the length of its head and body at 31-57%. The tail length of southern grasshopper mice museum specimens made up an average of 33.9% of their body length. Their tail length measured an average of 4.58 ± 0.36 centimeters in females, and 4.50 ± 0.39 centimeters in males.
50%
70%
90%

The southern grasshopper mouse routinely eats which scorpion?
Arizona Bark Scorpion
The southern grasshopper mouse routinely kills and eats Arizona bark scorpions (Centruroides sculpturatus), a species with a highly venomous sting.
Baja California Bark Scorpion
Florida Bark Scorpion
Mexican Scorpion

What do southern grasshopper mice eat?
Scorpions
10-25% of the southern grasshopper mouse’s diet consists of seeds, plants, and vegetables. The remaining 75-90% includes mainly scorpions, but also grasshoppers, beetles, and small vertebrates, including salamanders, lizards, frogs, small mammals, and other rodents.
Seeds
10-25% of the southern grasshopper mouse’s diet consists of seeds, plants, and vegetables. The remaining 75-90% includes mainly scorpions, but also grasshoppers, beetles, and small vertebrates, including salamanders, lizards, frogs, small mammals, and other rodents.
Mice
10-25% of the southern grasshopper mouse’s diet consists of seeds, plants, and vegetables. The remaining 75-90% includes mainly scorpions, but also grasshoppers, beetles, and small vertebrates, including salamanders, lizards, frogs, small mammals, and other rodents.
Fish

When do female southern grasshopper mice become sexually mature?
6 Weeks
Female southern grasshopper mice become receptive at 6 weeks of age and give birth to their first litter when four or five months old.
6 Days
6 Months
16 Days

When is the peak southern grasshopper mouse breeding season?
Spring-Summer
Southern grasshopper mice are capable of breeding year-round, but peak reproductive activity occurs during the late spring and summer from May to July. Breeding may start in January under ideal conditions.
Summer-Fall
Fall-Winter
Winter-Spring

What type of fur does the southern grasshopper mouse have?
Fine & Dense
The southern grasshopper mouse is covered with fine, dense fur.
Course & Wooly
Smooth & Silky
Full & Fluffy

The southern grasshopper mouse has no known major threats.
True
The species has no known major threats.
False

How do southern grasshopper mice benefit farmers?
Eat Harmful Insects
Largely due to their ferocity and appetite, southern grasshopper mice are considered beneficial by farmers and others because they eat potentially harmful insects. They help farmers by eating a large number of insects and rodents that would otherwise destroy crops.
Spread Seed Growth
Provide Fertilizer
Oxygenate the Soil

Southern grasshopper mice are cannibalistic.
True
Southern grasshopper mice often commit acts of cannibalism, killing and eating other members of their species if they are threatened or in need of food.
False

What is the southern grasshopper mouse’s movement pattern?
Not a Migrant
The southern grasshopper mouse is not migratory and does not have seasonal movements.
Seasonal Migrant
Full Migrant
Altitudinal Migrant

There are conservation measures specific to the southern grasshopper mouse.
False
There are no known conservation measures specific to the southern grasshopper mouse.
True

When do southern grasshopper mice grow their fur?
10 Days
Young southern grasshopper mice are born naked with pink translucent skin and weigh approximately 2.6 grams, or 0.09 ounces. One day later, the pigment develops on the dorsal surface and by day 10, hairs of 3 millimeters or 0.12 inches long are present on the back.
Birth
10 Hours
10 Weeks

What is the southern grasshopper mouse’s alternative name?
Scorpion Mouse
The southern grasshopper mouse is also known as the scorpion mouse. Both names are derived from its carnivorous diet consisting mostly of arthropods, especially scorpions and orthopteran insects, such as grasshoppers.
Howling Mouse
Arizona Bark Mouse
Wolf Mouse

What habitats does the southern grasshopper mouse inhabit?
Shrubland
The southern grasshopper mouse inhabits temperate shrubland and desert habitats. It is found in shortgrass prairies; desert scrub; rocky soils; creosote, hot, arid valleys; and semi-desert areas.
Desert
The southern grasshopper mouse inhabits temperate shrubland and desert habitats. It is found in shortgrass prairies; desert scrub; rocky soils; creosote, hot, arid valleys; and semi-desert areas.
Forest
Grassland

What is the southern grasshopper mouse’s rhythm?
Nocturnal
Southern grasshopper mice are largely nocturnal.
Diurnal
Crepuscular
Cathemeral

Southern grasshopper mice with which diet tend to have the largest brain size?
Generalist
Relative brain size in southern grasshopper mice tends to vary with food preferences. Brain size is usually larger in both granivores and insectivores, and largest in generalists.
Granivorous
Insectivorous
Folivorous

How does the southern grasshopper mouse differ from other rodents?
Carnivorous Diet
The southern grasshopper mouse is unique among other North American rodents in the family Cricetidae in that its diet consists mostly of arthropods. The southern grasshopper mouse overlaps greatly in niche characteristics with the northern grasshopper mouse (Onychomys leucogaster), though it seems to prey more heavily on arthropods. In potential areas of overlap with the northern grasshopper mouse in southern Mono County, California, the southern grasshopper mouse may occupy areas of lower elevation.
Low Elevation
The southern grasshopper mouse is unique among other North American rodents in the family Cricetidae in that its diet consists mostly of arthropods. The southern grasshopper mouse overlaps greatly in niche characteristics with the northern grasshopper mouse (Onychomys leucogaster), though it seems to prey more heavily on arthropods. In potential areas of overlap with the northern grasshopper mouse in southern Mono County, California, the southern grasshopper mouse may occupy areas of lower elevation.
Longer Tail
Larger Size

Where does the southern grasshopper mouse nest?
Underground
The southern grasshopper mouse nests in small burrows dug into the ground.
In Shrub
In Trees
Near Water

Southern grasshopper mice are difficult to wipe out.
True
As with many rodents, southern grasshopper mice are difficult to wipe out, even by humans.
False

How far away can a southern grasshopper mouse howl be heard?
100 m. / 328 ft.
The mouse can produce a loud, piercing, pure tone, which lasts between 0.7 and 1.2 seconds and is audible to the human ear up to 100 meters away.
50 m. / 164 ft.
150 m. / 492 ft.
10 m. / 33 ft.

From where does the southern grasshopper mouse obtain most of its moisture?
Food
The southern grasshopper mouse drinks water in captivity, but probably obtains moisture from food under natural conditions.
Rain
Streams
Ponds

What is the southern grasshopper mouse’s parental investment?
Both, Maternal & Paternal
Both males and females care for the young.
Maternal
Paternal
None

How does the southern grasshopper mouse kill its prey?
Bite to the Head
After stalking its potential kill, the grasshopper mouse will seize the animal with a rush, killing with a bite to the head.
Bite to the Throat
Disembowelment
Tail Whip to the Head

Which sex of southern grasshopper mouse keeps a larger home range?
Male
On average, males have a home range of 7.8 acres, while females occupy an area of 5.9 acres.
Female

What is the southern grasshopper mouse’s primary diet?
Carnivorous
Southern grasshopper mice are omnivorous, but have a mainly carnivorous diet.
Frugivorous
Granivorous
Folivorous

How do southern grasshopper mice defend their territories?
Vocalizations
Adult males guard their large territories fiercely against all intruders. Their efficient spacing is facilitated by high-pitched calls and vocalizations made at night to serve as territorial advertisement.
Aggression
Adult males guard their large territories fiercely against all intruders. Their efficient spacing is facilitated by high-pitched calls and vocalizations made at night to serve as territorial advertisement.
Scat Marking
Urine Marking

The southern grasshopper mouse is a good climber.
True
The southern grasshopper mouse is a good climber.
False

What is the southern grasshopper mouse’s population density?
Low
The southern grasshopper mouse is usually found in areas with low population densities.
Medium
High

How many southern grasshopper mouse subspecies are recognized by ITIS?
7
Seven subspecies are currently recognized by the Integrated Taxonomic Information System (ITIS): O. t. canus, O. t. clarus, O. t. perpallidus, O. t. ramona, O. t. surrufus, O. t. tularensis, and O. t. yakiensis.
10
17
0

What countries does the southern grasshopper mouse inhabit?
United States
The southern grasshopper mouse is found mainly in the Western and Southwestern United States and in Northern Mexico.
Mexico
The southern grasshopper mouse is found mainly in the Western and Southwestern United States and in Northern Mexico.
Guatemala
Canada

What is the southern grasshopper mouse’s population trend?
Stable
The southern grasshopper mouse has a currently stable population trend.
Increasing
Decreasing
Unknown

Southern grasshopper mouse tail length varies by sex.
False.
Average tail length does not vary greatly between the sexes.
True, males’ tails are longer.
True, females’ tails are longer.

How does the southern grasshopper mouse deal with scorpion venom?
Neural Anesthetic Mechanism
Researchers have found that a neural mechanism is involved that blocks the sending of pain messages to the brain. This mouse can normally feel pain from other sources, but can be temporarily insensitive to these stimuli after a dose of venom from a bark scorpion. This pain modulation is activated soon after the scorpion sting. For a moment, the mouse feels pain, but then the scorpion venom binds to the transmembrane channel otNav1.8. Specifically, the venom binds to a glutamic acid residue located within the channel protein. This prevents neuron action potentials from firing, and acts as a type of temporary anesthetic and pain reliever for the mouse. When this glutamic acid was replaced with hydrophilic glutamine residue, the venom did not bind with the protein, and the pain modulation ability was lost.
Removes Stinger
Sucks Out Venom
Venom Immunity

There is sexual dimorphism in the southern grasshopper mouse.
True, females are larger.
There is sexual dimorphism displayed in the physiology of the southern grasshopper mouse as females are heavier and longer than males.
True, males are larger.
False.

How long is southern grasshopper mouse gestation?
26-35 Days
Southern grasshopper mouse gestation lasts 26-35 days, with an average of 29 days.
16-25 Days
36-45 Days
46-55 Days

How many litters can a female southern grasshopper mouse produce in a year?
6
Young females apparently have significantly greater reproductive potential than old females. They are able to produce as many as six litters in a year in the wild, but their reproductive life is short, few breeding successfully in their second year.
2
4
8

What color is the southern grasshopper mouse’s underside?
White
The upper body is a grayish or pinkish-cinnamon color. The basal two-thirds of the tail are colored like the upper body, but the terminal tip is white like the underside of the body. The two colors are distinctly separated.
Brown
Black
Pink

What preys on southern grasshopper mice?
Raptors
Predators of the southern grasshopper mouse include raptors, snakes, and predatory mammals.
Snakes
Predators of the southern grasshopper mouse include raptors, snakes, and predatory mammals.
Scorpions
Mice

Southern grasshopper mice eat crops.
True
Although southern grasshopper mice are mainly carnivorous, they do eat the same crops they normally help defend if their usual prey, insects and small vertebrates, become scarce.
False

What is a group of southern grasshopper mice called?
Nest
A group of southern grasshopper mice is called a nest.
Pack
Burrow
Cluster

What is the southern grasshopper mouse’s generation length?
1-2 Years
The southern grasshopper mouse’s generation length is 1-2 years.
3-4 Years
5-6 Years
7-8 Years

There are protected areas in the southern grasshopper mouse’s range.
True
There are several protected areas within its range. Conservation sites have been identified over the species’ entire range.
False

When do southern grasshopper mice first open their eyes?
15 Days
The young mice immediately begin nursing from their mother and open their eyes on day 15, at two weeks of age.
Birth
15 Hours
5 Weeks

What kind of shrub cover does the southern grasshopper mouse prefer?
Low-Moderate
Low to moderate shrub cover is preferred.
Moderate
Moderate-High
None

Southern grasshopper mice are active year-round.
True
Southern grasshopper mice are active year-round.
False

Southern grasshopper mice with which diet tend to have the smallest brain size?
Folivorous
Relative brain size in southern grasshopper mice tends to vary with food preferences. Brain size is usually smallest in folivores.
Granivorous
Insectivorous
Generalist

What is the lifespan of a southern grasshopper mouse?
4 Years
The southern grasshopper mouse has an average lifespan of 4.6 years.
2 Years
6 Years
8 Years

How does the southern grasshopper mouse acquire burrows?
Aggression
Often, these burrows have been deserted by other rodents or were taken by the grasshopper mouse through force. They may also be excavated.
Excavation
Often, these burrows have been deserted by other rodents or were taken by the grasshopper mouse through force. They may also be excavated.
Abandonment
Often, these burrows have been deserted by other rodents or were taken by the grasshopper mouse through force. They may also be excavated.

The southern grasshopper mouse’s population is severely fragmented.
False
The southern grasshopper mouse’s population is not severely fragmented.
True

What is the southern grasshopper mouse litter size?
1-6
Litter size ranges from one to six young with an average litter size of 2.6-4.
6-12
12-18
18-24

When are southern grasshopper mice weaned?
3 Weeks
They are weaned at three weeks of age and begin consuming solid food by day 19. Weaning in the laboratory may occur in 20 days.
3 Days
3 Months
13 Days

What type of elevation does the southern grasshopper mouse prefer?
Low
The most preferred xeric areas are at low elevations.
Moderate
High

How much did you know about the southern grasshopper mouse? Share your results in the comments!

Learn More About the Southern Grasshopper Mouse

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