#Brown Rat

[thebrainscoop]

What’s up nerds

Here’s a weird one for ya

[indagold-orchid]

So I learned brown rats originated from northern china/mongolia and that explains all the favorable folklore about them. They appreciated the bois.

Rat wedding

[vintagewildlife]

Brown rat By: Lanceau From: Éditions Rencontre Cards 1975

[dougdimmadodo]

Brown Rat (Rattus norvegicus)

Family: Typical Mouse Family (Muridae)

IUCN Conservation Status: Least Concern

Fossil evidence and historical records suggest that the Brown Rat plausibly originates from somewhere in northern China and southern Mongolia, but after centuries of stowing away on ships and exploiting the resources available in human-altered habitats it is now among the most abundant and widely distributed mammals on earth, being found in large numbers almost anywhere where permanent human settlements exist. Relatively large for a member of its family, it owes its success to its extraordinary adaptability; intelligent and opportunistic, members of this species are able to endure a huge range of different climates by constructing elaborate burrows in which they can regulate the temperature, and (owing to their strong, continually growing teeth and unspecialised digestive system) can feed on almost any form of organic matter - while coarse plant matter, carrion, bird’s eggs and small vertebrates are preferred, the diets of different populations vary enormously depending on what resources are available. Brown Rats are also remarkably fast learners, and seem to teach one another - it has been observed that once a single Brown Rat living in an area has learned a specific skill needed to exploit a specific resource (such as learning to dive for fish,) others within its social group will quickly develop the same skill. Brown Rats live in loosely-structured social groups with a linear dominance hierarchy in which body size determines rank (with larger rats ranking higher,) but when resources are scarce these groups will become smaller or break apart entirely. Like most rodents, Brown Rats breed frequently and mature rapidly - after mating (usually during periods of warm weather, and often with numerous different males in a single breeding period,) females produce litters of up to 14 pups and gather in all-female social groups, with all of the mothers in a group sharing a communal burrow and cooperating to feed and protect their young until they become independent at around 4 weeks old. Although they can benefit ecosystems (serving as seed distributers, sustaining populations of rodent-eating predators and providing soil-dwelling organisms with oxygen by breaking up compacted soil when burrowing), invasive populations of Brown Rats have had devastating effects on many species, destroying the nests of birds, competing with indigenous mammals and transferring diseases between species. While humans generally regard members of this species as pests, a domesticated subspecies of Brown Rat (the Domestic Rat, Rattus norvegicus domesticus) is widely kept in captivity, both for use in research (where they are known as Lab Rats) and as pets (where they are called Fancy Rats.)

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Image Source: https://www.inaturalist.org/taxa/44576-Rattus-norvegicus

[sitting-on-me-bum]

Rats! Everyone says they’re nasty, but they’re extremely clean. They’re also very intelligent! Also the black plague was caused by fleas that infected the rats, not the rats themselves.

Photographer: Denitsa Kireva

[kandibandz]

We made some brown rat emotes, feel free to use them and if you'd like other colours please ask us! :3c

- Zuku ( 🥦 )

[mastomysowner]

It's just a rattus norvegicus drinking some water (kristinakris86)

[uncharismatic-fauna]

Uncharismatic Fact of the Day

The star of the famous Disney movie Ratatoullie could only have been a brown rat, due to his highly developed sense of smell. Brown rats, or norway rats, have incredible noses and are able to detect contaminants in food at levels as low as 0.5 parts per million. These rats can also remember which scents are associated with poison and will know to avoid it in the future.

(Image: A Norway rat (Rattus norvegicus) by Heidi Snell)

If you like what I do, consider leaving a tip or buying me a kofi!

[jojoseames]

Skulltober day 24: brown rat

Ink, 7 x 5 inches JoJo Seames, 2023

[pixelmischief]

HEHEHEHE WHO WANTS RAT EARRINGS!!!!!

Finally got all the different colors I'm going to offer!!!! White, grey, brown, dark brown, black, cream, grey and white, brown and white, opossum, and black and white!!!! This is part of my display for an art fest I'll be going to July 2nd in the Seattle area!!! ❤️🧡💛💚💙💜

[sharlful]

me and all my friends jumping on tumblr posting like its twitter immediately destroying whatever vibe existed here before

[frank-olivier]

Saturday, March 25, 2023

[vintagewildlife]

Rat By: Unknown photographer From: WWF Nature in Danger Stickers 1987

[richs-pics]

Brown rat

[polarwooly]

Sketches from the second Battle of Saltlake.

[sguysmw]

Tumblr's Favourite Animal - CONTENDERS (#4)

Rats!

I know what you're thinking. Rats have a pretty bad reputation, to the point where Alberta pretty much banned them altogether. But really, rats deserve as much respect as other animals. They're very intelligent, apparently being able to recognize 3D objects even if their size changes or they're rotated. There are 56 species of these loveable rodents. Perhaps the best known is the brown rat (Rattus norvegicus). Possibly originating in Asia, brown rats now roam every continent except Antarctica. A study in New York shows that populations in different neighbourhoods are slowly evolving distinct genomic profiles. Fancy rats—the ones owned as pets—are a domesticated subspecies.

Nominated by @candiedcoder