eFinder

eFinder

Home › Article

The 'tail' of the shrinking dog brain: Study reveals they began getting smaller 5,000 years ago

Phys · · 539 words · By Paul Arnold

New research comparing ancient and modern canid skulls suggests that dog brain size began a significant reduction around 5,000 years ago. Scientists hypothesize this reduction was linked to the transition to settled farming, suggesting that smaller brains may have facilitated traits like heightened anxiety and alertness, making dogs effective alarm systems for early human settlements.

open_in_new Read the original article: https://phys.org/news/2026-04-tail-dog-brain-reveals-began.html

analyticsAnalysis

10%
Propaganda Score
confidence: 90%
Low risk. This article shows minimal use of propaganda techniques.

fact_checkFact-Check Results

5 claims extracted and verified against multiple sources including cross-references, web search, and Wikipedia.

check_circle Corroborated 4
info Single Source 1
check_circle
“New research published in the journal Royal Society Open Science, which compared ancient and modern canid skulls, puts the date [of dog brain shrinking] at around 5,000 years ago.”
CORROBORATED
Multiple web search results report on a study comparing ancient and modern canid skulls, specifically noting a brain size decrease around 5,000 years ago, coinciding with settled farming. The claim is supported by multiple independent web sources discussing the same research findings.
menu_book
wikipedia NEUTRAL — Canidae (; from Latin, canis, "dog") is a biological family of caniform carnivorans, constituting a clade. A member of this family is a canid (, rarely ), colloquially referred to as dogs. The family …
https://en.wikipedia.org/wiki/Canidae
menu_book
wikipedia NEUTRAL — It is widely agreed that the evolutionary lineage of the grey wolf can be traced back 2 million years to the Early Pleistocene species Canis etruscus, and its successor the Middle Pleistocene Canis mo…
https://en.wikipedia.org/wiki/Evolution_of_the_wolf
menu_book
wikipedia NEUTRAL — Purported remains of Paleolithic dogs have been reported from several European archaeological sites dating to over 30,000 years ago. Their status as domesticated is highly controversial, with some aut…
https://en.wikipedia.org/wiki/Paleolithic_dog
+ 3 more evidence sources
check_circle
“Our four-legged friends have been at our side for at least 15,000 years, according to genetic and archaeological evidence.”
CORROBORATED
Multiple sources confirm that dogs have a long relationship with humans. One web search cites 'at least 15,000 years ago' regarding the commensal relationship, and another web search mentions 'at least 15,000 years ago' in the context of human culture. While Wikipedia provides general information on domestication, the specific timeframe of 15,000 years is corroborated by multiple external web search results.
menu_book
wikipedia NEUTRAL — The dog (Canis familiaris or Canis lupus familiaris) is a domesticated descendant of wolves. Also called the domestic dog, it was selectively bred during the Late Pleistocene by hunter-gatherers. Dogs…
https://en.wikipedia.org/wiki/Dog
menu_book
wikipedia NEUTRAL — The dog is a domesticated canid species, Canis familiaris. Dog, dogs, DOG, or DOGS may also refer to:
https://en.wikipedia.org/wiki/Dog_(disambiguation)
menu_book
wikipedia NEUTRAL — Dogs Eating Dogs is an EP by American rock band Blink-182, released on December 18, 2012. Self-funded and issued independently following the band’s departure from Interscope Records, the project was d…
https://en.wikipedia.org/wiki/Dogs_Eating_Dogs
+ 3 more evidence sources
info
“New research... compared ancient and modern canid skulls, [and] studied the CT scans of 22 prehistoric wolves and dogs (dating from 35,000 to 5,000 years ago), 104 modern dogs and 59 modern wolves.”
SINGLE SOURCE
The specific details regarding the analysis of CT scans of 22 prehistoric wolves and dogs (35,000 to 5,000 years ago), 104 modern dogs, and 59 modern wolves are highly specific and appear to be drawn from a single research context or article. While the general topic (comparing ancient and modern canids) is covered by multiple sources, the exact numbers and scope of the study described in this claim are not independently confirmed by multiple sources.
menu_book
wikipedia NEUTRAL — Dhalbhumargh is a village in the Dhalbhumgarh CD block in the Ghatshila subdivision of the East Singhbhum District in the Indian state of Jharkhand.
https://en.wikipedia.org/wiki/Dhalbhumgarh
menu_book
wikipedia NEUTRAL — Donovan John Clingan (born February 23, 2004) is an American professional basketball player for the Portland Trail Blazers of the National Basketball Association (NBA). He played college basketball fo…
https://en.wikipedia.org/wiki/Donovan_Clingan
menu_book
wikipedia NEUTRAL — The Grumman HU-16 Albatross is a large, twin-radial engined amphibious flying boat that was used by the United States Air Force (USAF), the U.S. Navy (USN), the U.S. Coast Guard (USCG), and the Royal …
https://en.wikipedia.org/wiki/Grumman_HU-16_Albatross
+ 3 more evidence sources
check_circle
“The results revealed a potential turning point during the transition to settled farming. 'We found, however, a dramatic 46% brain size reduction by 5000–4500 yr BP in Late Neolithic dogs compared with contemporaneous wolves, with brain volume close to that of recent Toy breeds, providing potential evidence for very early behavioral selection,' explained the team in their paper.”
CORROBORATED
Two independent web search results report the exact findings: a 46% brain size reduction in Late Neolithic dogs (5,000–4,500 years ago) compared to contemporary wolves. This specific quantitative finding is reported by multiple sources discussing the same research.
menu_book
wikipedia NEUTRAL — Neolithic Greece is an archaeological term used to refer to the Neolithic phase of Greek history beginning with the spread of farming to Greece in 7000–6500 BC, and ending around 3200 BC. During this …
https://en.wikipedia.org/wiki/Neolithic_Greece
menu_book
wikipedia NEUTRAL — Pre-Pottery Neolithic A (PPNA) denotes the first stage of the Pre-Pottery Neolithic, in early Levantine and Anatolian Neolithic culture, dating to c. 12,000 – c. 10,800 years ago, that is, 10,000–8800…
https://en.wikipedia.org/wiki/Pre-Pottery_Neolithic_A
menu_book
wikipedia NEUTRAL — The prehistory of East Africa spans from the earliest human presence in the region until the emergence of the Iron Age in East Africa. Between 1,600,000 BP and 1,500,000 BP, the Homo ergaster known as…
https://en.wikipedia.org/wiki/Prehistoric_East_Africa
+ 3 more evidence sources
check_circle
“Brain size reduction in dogs was already established at least by the Late Neolithic of western Europe, 5,000 years ago.”
CORROBORATED
Multiple web search results confirm that the brain size reduction was established in the Late Neolithic period, specifically around 5,000 years ago. This fact is consistently reported across different discussions of the same research.
menu_book
wikipedia NEUTRAL — The Neolithic decline was a rapid collapse in populations between about 3450 and 3000 BCE during the Neolithic period in western Eurasia. The specific causes of that broad population decline are still…
https://en.wikipedia.org/wiki/Neolithic_decline
menu_book
wikipedia NEUTRAL — The domestication of the dog was the process which led to the domestic dog. This included the dog's genetic divergence from the wolf, its domestication, and the emergence of the first dogs. Genetic st…
https://en.wikipedia.org/wiki/Domestication_of_the_dog
menu_book
wikipedia NEUTRAL — The Neolithic (from Greek νέος néos 'new' and λίθος líthos 'stone'), or New Stone Age, is an archaeological period, the final division of the Stone Age in Asia, Europe, and Africa (c. 10,000 BC to c. …
https://en.wikipedia.org/wiki/Neolithic
+ 3 more evidence sources
info Disclaimer: This analysis is generated by AI and should be used as a starting point for critical thinking, not as definitive truth. Claims are verified against publicly available sources. Always consult the original article and additional sources for complete context.