Greater Guinea Pig
ExploreMammals
Greater Guinea Pig
cavia magna
The Greater Guinea Pig (Cavia magna) is a surprisingly large wild relative of the common domestic guinea pig, native to the wet coastal regions of South America. Unlike its dry-land cousins, this robust rodent has adapted to a semi-aquatic lifestyle, making its home in marshes, swamps, and wet grasslands. It is highly social and active, navigating dense wetland vegetation with surprising agility.
Habitat: Typically found in freshwater marshes, wet grasslands, and swampy areas with dense vegetative cover.
Appearance
The Greater Guinea Pig is a stout, tailless rodent, noticeably larger than other wild cavies, with a body length of up to 40 centimeters. It features a coarse, dense coat of dark agouti fur, blending brown and black tones that provide excellent camouflage in muddy marsh environments. It has a blunt snout, small ears, and strong, dark-clawed feet designed to traverse wet, slippery substrates.
KingdomAnimaliaPhylumChordataClassMammaliaOrderRodentiaFamilyCaviidaeGenusCavia
Category
MammalsRarity
Common
Danger
1/5 · Very low
Snaps
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Interesting facts
Because they live in nutrient-dense wetland ecosystems, their diet consists of water-rich plants, meaning they rarely need to drink freestanding water.
Greater Guinea Pigs are highly skilled swimmers, a trait which sets them far apart from domestic guinea pigs that fear water.
To avoid being seen by aerial predators, they maintain very specific, covered runways underneath the dense marsh reeds.
Special abilities
Ability
Semi-Aquatic Swimming
It is an accomplished swimmer, utilizing its strong legs and streamlined body to cross waterways and evade terrestrial predators.
Ability
Runway Creation
It clips and tramples dense marsh grasses to create a network of hidden tunnels or 'runways' for rapid, covert movement.
Ability
Precocial Birthing
Mothers give birth to highly developed young that are fully furred, have their eyes open, and can eat solid food within hours.
Diet & Feeding
Feeds on a variety of wetland vegetation, primarily consuming semi-aquatic grasses, sedges, and tender shoots.
Primary Foods
- Aquatic grasses
- Sedges
- Marsh herbs
- Tender shoots
Foraging Method
- Grazing
Ecological connections
eaten by
Crab-eating Fox
Cerdocyon thous
The Crab-eating Fox is a primary predator of the Greater Guinea Pig, hunting them in the thick, swampy grass.
eaten by
Southern Caracara
Caracara plancus
The Southern Caracara is a bird of prey that opportunistically targets young or exposed Greater Guinea Pigs from above.
competitor
Brazilian Guinea Pig
Cavia aperea
The Brazilian Guinea Pig overlaps in parts of its range and competes with the Greater Guinea Pig for herbaceous food resources.
Traits
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Also known as
No aliases listed yet.
Collections
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Safety
Danger
1/5 · Very low
No special safety notes yet.
Frequently Asked Questions
How to identify Greater Guinea Pig?
The easiest way to identify Greater Guinea Pig is to use the Snappit nature identifier app.
What does Greater Guinea Pig eat?
Feeds on a variety of wetland vegetation, primarily consuming semi-aquatic grasses, sedges, and tender shoots.
Where is Greater Guinea Pig usually found?
Typically found in freshwater marshes, wet grasslands, and swampy areas with dense vegetative cover.
How does Greater Guinea Pig hunt?
Grazing
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