Critter Science
  • Zoology
    • Ecology
      • Animal Conservation
        • CITES: Protecting Wildlife
        • Dame Jane Goodall
        • Endangered Animals
        • Ex Situ Explained
        • In Situ Explained
        • IUCN Statuses
        • Zoological Branches
      • Chromatophores and Survival
      • Ecosystems
        • Animal Habitats
        • The Biomes
        • Coastal Erosion
        • Rainforest Types
      • Evolution. The Facts.
        • Animal Devolution
        • Animal Mimicry
        • Convergent Evolution
        • Carl Linnaeus
        • Charles Darwin
        • Evolution of Amphibians
        • Evolution of Birds
        • Genetic Drift in the Animal Kingdom
        • Naturalism
        • Natural Selection
        • Venom vs Poison
      • Invertebrate Families Explored
        • What are Arachnids?
          • Spider Webs
      • Predator vs Prey
      • Producers and Consumers
      • Vertebrate Animal Families
        • Amphibians: Unseen Guardians
        • Snakes vs Legless Lizards
        • What is a Marsupial?
      • The Wild Apothecary
    • Sustainability
      • Climate Change
      • Global Warming
      • Pollution
        • Air Pollution
        • Land Pollution
        • Light Pollution
        • Microplastics Pollution
        • Noise Pollution
        • Water Pollution
      • Recycling
        • Recycling Plastics
      • Renewable Energy
    • Animal Behavioral Patterns
      • Avian Communication
      • Animal Thermoregulation
      • Cetacean Communication
      • Elephant Communication
      • Herpetofauna Communication
      • Primate Language: The Debate
      • Types of Animal Dormancy
    • What are Species?
      • Amphibians vs Reptiles
      • Animal Reproduction
      • Animal Skin and Scales
      • Claws, Nails, and Talons
      • Fur and Hair
      • Gecko Feet
      • Invasive Species
      • Lazarus Species: Rediscovered Life
      • Speciation
      • Species Complex
      • The Enigmatic Purr
    • About the Critterman
  • Daily Critter Facts
    • Amphibian Facts
      • Frog Facts
      • Newt Facts
      • Salamander Facts
      • Toad Facts
    • Arthropod Facts
      • Arachnid Facts
      • Insect Facts
    • Bird Facts
      • Flightless Bird Facts
      • Predatory Bird Facts
      • Scavenger Bird Facts
      • Wading Bird Facts
    • Cryptozoology
    • Fish Facts
      • Cephalopod Facts
      • Crustacean Facts
      • Jellyfish Facts
      • Reefs
      • Shark and Ray Facts
      • Shellfish Facts
    • Flying Mammal Facts
    • Gastropod Facts
    • Land Mammal Facts
      • Canine Facts
      • Feline Facts
      • Lagomorph Facts
      • Marsupial Facts
      • Mustelid Facts
      • Primate Facts
      • Rodent Facts
      • Ungulate Facts
    • Parasite Facts
    • Reptile Facts
      • Crocodilian Facts
      • Lizard Facts
      • Snake Facts
      • Turtle Facts
    • Sea Mammal Facts
      • Dolphin Facts
      • Porpoise Facts
      • Sea Lion Facts
      • Seal Facts
      • Whale Facts
    • Worm Facts
  • For Teachers
    • Animal Quizzes
      • Amphibian Quiz
      • Bird Quiz
      • Cat Quiz
      • Dog Quiz
      • Dolphin Quiz
      • Insect Quiz
      • Reptile Quiz
    • Animal Word Search
    • Butterfly Life Cycle
      • Butterfly Metamorphosis
      • World’s Largest Butterfly
      • World’s Largest Moth
    • The Cellular Structure of an Animal
    • Coloring Pages
    • Fish and Sharks
    • Frogs vs Toads
    • Insect vs Bug
    • Metamorphosis – A Frog’s Life Cycle
  • Study Guides
    • African Animals
    • Antarctica Animals
    • Asian Animals
    • Australian Animals
    • Central American Animals
    • European Animals
    • North American Animals
    • South American Animals
  • Diseases & Parasites
    • Bsal
    • Canine Distemper Virus (CDV)
    • Chronic Wasting Disease (CWD)
    • The Deadly Chytrid Fungus
    • All About Parasites
    • The Rabies Virus
    • Toxoplasmosis
    • White-Nose Syndrome
  • Contact
    • General Contact
    • Guest Article Submission
      • Guest Articles
        • Guest Articles – 2024
    • What Critter is This?
    • Animal Welfare Organizations
    • Privacy Policy
Subscribe
lesser grison

The Fierce Lesser Grison

  • 24 February, 2026
  • Critterman
  • No Comments
  • 1 Views
  • 0 Likes
Daily Critter Facts, Land Mammal Facts, Mustelid Facts

The lesser grison is a species of mustelid that hails from South America. They are the bane of cavies throughout their range, and are persecuted for hunting poultry as well. These grisons face the threats of habitat division from roads and railroads, which also result in vehicle strike (being hit by vehicles); hunting, for their meat; and trapping, coupled with poisoning, for retaliation due to the killing of the afore mentioned poultry. However, these grisons are listed by the IUCN as Least Concern due to their range and numbers. Their population trend is listed as unknown at this time.

First the Stats…

Scientific name: Galictis cuja
Weight: Up to 5.3 lbs.
Length: Up to 20 inches, plus up to a 7.5 inch tail
Lifespan: Up to 10 years

Now on to the Facts!

1.) These critters are often hunted for sport.

2.) They are skilled swimmers with webbed feet that are equipped with sharp, curved claws.

3.) Lesser grisons are found from sea level all the way up to 13,800 feet elevations.

4.) Their preferred habitats are grasslands, forests, scrubs, and mountain meadows. But they’re always near a water source.

5.) There are 4 recognized subspecies: G. c. furax, G. c. huronax, G. c. luteola, and of course G. c. cuja.

But wait, there’s more on the lesser grison!

6.) Being primarily carnivorous (eat meat) these critters prey on rats, mice, gophers, moles, rabbits, birds, frogs, lizards, and snakes. However, they also feast on fruits like avocados.

7.) That being said, their favorite prey items are wild guinea pigs and nesting grebes.

Did you know…?
Being mustelids, they have anal scent glands that are capable of spraying a noxious chemical similar to, but likely weaker than, that of skunks.

8.) Females undergo up to a 50 day gestation (pregnancy) that yields up to 5 young, called kits.

9.) They are diurnal (active during the day).

10.) These critters are known for being particularly ruthless and will play with their captured prey for up to 45 minutes, till finally eating it.

But wait, there’s still more on the lesser grison!

11.) Family groups have been seen traveling in a single file line from their hides and burrows (which can measure up to 13 feet deep).

12.) If reared from a young age, they can be tamed.

Did you know…?
These critters can act as a reservoir for Chagas disease. Chagas disease is spread by the feces (poop) of infected kissing bugs.

13.) They were once used in hunting chinchillas, as they could follow the chinchillas down into their hides.

14.) These grisons have been found to be hosts of an intestinal acanthocephalan parasitic worm, Pachysentis gethi.

15.) Sadly, the bodies of lesser grisons have been used as magical charms in Bolivia, with their pelts stuffed with wool and decorated with ribbons and paper in an effort to be used in ritual offerings to Pachamama (a supreme fertility goddess revered by the indigenous people of the Andean region).

Now a Short Lesser Grison Video!

This video talks about the greater grison, but they are both very similar.

Be sure to share & comment below! Also, check out the Critter Science YouTube channel. Videos added regularly!

Subscribe


Want to suggest a critter for me to write about? Let me know here.

Some source material acquired from: Wikipedia & IUCN

Trending
The Harris’s Hawk

burrowgrisonhuntedleast concernlesser grisonmustelidpersecutedpredatorSouth America
Critterman

With over 50 years of critter experience to my credit and hundreds of zoology teaching hours to people around the world, I have amassed not only a continuing thirst for critter knowledge but a desire to teach others all I can about the majesty and wonder of our natural world. Critter Science is a culmination of such knowledge. I have hands on as well as book acquired intel on all kinds of critters. Whether they're on land, sea, or in the air. I will never say that I know everything about all animals. That's impossible, even for a savant. But, that being said, ask me any animal question and I'll answer it. If I don't know the answer, I'll get an answer for you!

The European Paper Wasp
Related Posts
  • European paper wasp
    The European Paper Wasp 23 February, 2026
  • black-backed jackal
    The Black-Backed Jackal 19 February, 2026
  • monjon
    The Dwindling Populations of the Monjon 18 February, 2026

Leave a Reply Cancel Reply

Your email address will not be published. Required fields are marked *

  • Daily Critter Facts
  • Guest Articles
  • BYET
  • Teachers
  • Study Guides
  • Contact

Copyright © 2025, Critter Science. All Rights Reserved.