CreatureData

Pará spiny tree-rat

Mesomys stimulax Thomas, 1911

LCLeast Concernrodents

The pará spiny tree-rat (Mesomys stimulax) is a species in the family Echimyidae, order Rodentia. Recorded adults weigh 108 g to 141.5 g. Its IUCN Red List status is Least Concern.

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Quick facts about the pará spiny tree-rat

Weight
108 g – 141.5 gsrc for Weight
Length
Not recorded
Lifespan
Not recorded
Diet
Herbivoresrc for Diet
Main food
Not recorded
Habitat
Not recorded
Young per litter or clutch
0.97src for Young per litter or clutch
Active
At night (nocturnal)src for Active
Lifestyle
Arborealsrc for Lifestyle
Conservation status
Least Concern (IUCN)src for Conservation status
Countries on record
Not recorded

Where does the pará spiny tree-rat live?

Not recorded

What is the pará spiny tree-rat?

Quoted from WikipediaCC BY-SA 4.0

The Pará spiny tree rat (Mesomys stimulax) or Surinam spiny tree rat, is a spiny rat species found in Brazil.

Previously, Mesomys Stimulax's karyotype was 2n=60, Fundamental number (abbreviated FN), FN=116. However more recently the new karyotype has been found to be 2n=60, FN=110. This points to the idea that this species is most likely a species complex.

From the Wikipedia article “Pará spiny tree-rat” (en.wikipedia.org/w/index.php?title=Par%C3%A1_spiny_tree-rat&oldid=1368220894), by Wikipedia contributors, licensed under CC BY-SA 4.0 (creativecommons.org/licenses/by-sa/4.0). This block is kept separate from our own text.

Is the pará spiny tree-rat endangered?

The pará spiny tree-rat is listed as Least Concern on the IUCN Red List: it is not currently at risk of extinction.

  1. LCLeast Concern
  2. NTNear Threatened
  3. VUVulnerable
  4. ENEndangered
  5. CRCritically Endangered
  6. EWExtinct in the Wild
  7. EXExtinct

Category via Wikidata (CC0). Find the full assessment on the IUCN Red List. See all Least Concern species. What the categories mean.

How is the pará spiny tree-rat classified?

  1. kingdomAnimalia
  2. phylumChordata
  3. classMammalia
  4. orderRodentia
  5. familyEchimyidae
  6. genusMesomys
  7. SpeciesMesomys stimulax Thomas, 1911
Other names and names in other languages (12)
  • Para spiny tree ratEnglish
  • Para spiny tree ratEnglish
  • Pará spiny tree ratEnglish
  • Pará spiny tree ratEnglish
  • Surinam spiny tree ratEnglish
  • Surinam spiny tree ratEnglish
  • Surinam spiny tree-ratEnglish
  • koro surinamskýCzech
  • surinaminpiikkirottaFinnish
  • スリナムモリトゲネズミJapanese
  • jeżokolczak surinamskiPolish
  • Rato-espinhoso-arborícola-paraensePortuguese

Catalogue of LifeWikipediaiNaturalistWikidataIUCN Red List

Relatives of the pará spiny tree-rat

Other species in the same genus Mesomys.

ComparePará spiny tree-rat vs Ferreira's spiny tree-ratPará spiny tree-rat vs Woolly-headed spiny tree-ratPará spiny tree-rat vs Tufted-tailed spiny tree-rat

Common questions

Answered only where our data holds the answer.

How big is the pará spiny tree-rat?

An adult pará spiny tree-rat weighs 108 g – 141.5 g, according to values recorded on Wikidata.

Is the pará spiny tree-rat endangered?

The pará spiny tree-rat is listed as Least Concern on the IUCN Red List, meaning it is not currently at risk of extinction.

What kind of animal is the pará spiny tree-rat?

The pará spiny tree-rat (Mesomys stimulax) belongs to the family Echimyidae in the order Rodentia.

Sources and how to cite this page

Data as of 2026-11-11. How this page is put together.

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APA

CreatureData. (2026). Pará spiny tree-rat (Mesomys stimulax). Retrieved from https://creaturedata.com/animals/para-spiny-tree-rat

MLA

“Pará spiny tree-rat (Mesomys stimulax).” CreatureData, 2026, https://creaturedata.com/animals/para-spiny-tree-rat.

BibTeX
@misc{para_spiny_tree_rat_2026,
  title = {Pará spiny tree-rat (Mesomys stimulax)},
  author = {{CreatureData}},
  year = {2026},
  url = {https://creaturedata.com/animals/para-spiny-tree-rat},
  note = {Data as of 2026-11-11}
}