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Modified formulas for calculation of encephalization: quotient in dogs
1Department of Veterinary Pharmacology and Toxicology, College of Veterinary Medicine, Federal University of Agriculture, Benue State, P.M.B. 2373, Makurdi, Nigeria. pharn_saga2006@yahoo.com.
BMC Research Notes
|June 4, 2021
Summary
The encephalization quotient reveals that dogs with human-like body surface area, weight, and height exhibit higher intelligence. Doberman Pinschers are the most intelligent breed, followed by German Shepherds and Labrador Retrievers.
Area of Science:
- Comparative neurology
- Animal cognition
- Biometrics
Background:
- Dogs serve critical roles in security, companionship, and research.
- Canine intelligence is vital for roles in security and service.
- Human intelligence correlates with body metrics; this study explores canine parallels.
Purpose of the Study:
- To determine the comparative intelligence of ten dog breeds.
- To investigate the relationship between canine intelligence, body weight, height, and surface area.
- To utilize the encephalization quotient (EQ) for intelligence assessment.
Main Methods:
- Literature search on canine body weight, height, and body surface area (BSA).
- Calculation of encephalization quotient (EQ) using established formulas.
- Comparison of canine metrics to human standards for intelligence correlation.
Main Results:
- A relationship between brain allometry and humans was found in dogs via EQ.
- Saganuwa's formula proved effective for calculating canine EQ.
- Dogs with BSA, weight, and height similar to humans demonstrated higher intelligence.
Conclusions:
- Canine intelligence correlates with specific physical attributes.
- Doberman Pinschers, German Shepherds, and Labrador Retrievers are among the most intelligent breeds.
- EQ is a valuable tool for assessing canine intelligence relative to body metrics.

