Category: Intelligence

Neanderthal Intelligence and the Sperm Whale Brain

One of the few things we know about the internal organisation of the sperm whale brain is its cerebellar quotient (CQ). That information would be insignificant did it not place this species brain in two unique categories. In all other other cetaceans,

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Manipulation Complexity and the Intelligence of Sea Otters

Last year a paper was published by Sandra et al that allowed us to connect primate intelligence with manipulation complexity. Of particular interest to me, was that it indicated possibilities to measure the intelligence of non-primates. Unfortunately, connecting this work to cetaceans would be

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The Scale of Primate Intelligence

This post replaces an early one that contained several errors. Its purpose is to explain my Primate IQ Scale. It also incorporates data from an important 2016 paper by Sandra et al, to it. An Introduction Deaner et al. 2006, were the first to establish

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Does the Mirror Test Reflect Self-awareness?

The Mirror test of Self-Recognition (MSR) has been the gold standard in the quest to find the self-aware. Unfortunately, only a handful of species have ever passed it. Some scientists have been surprised that the subject of their research fail, as their

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Updated List of Most Intelligent Animal Genera

As time goes by, we become ever better acquainted with the abilities of the other animals with which we share the Earth. For many of the smartest, we already have enough data to place them with greater reliability than usually acknowledged. This

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The Intelligence of Pigs and its Relevance to Whales

A surprising discovery from molecular biology, was that the cetacean order (whales and dolphins) turns out to be embedded in the artiodactyla order (even-toed ungulates). Because of that, many now use the combined new order of Cetiartiodactyla = Artiodactyla + Cetacea. It means that pigs are

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Novel Ways to Measure Animal Intelligence

Yawn Duration To date, the highest correlation with animal intelligence yet proven by data, is that of absolute brain size. Unfortunately, we also know that brain allometry differs substantially  by group among both mammals and bird. As an example of the

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The Perils of Underrating or Overrating Animal Intelligence

A prime objective of this website, is to find ways to measure animal intelligence in the most objective ways available to us. That is why I am against the modern trend to say ‘a lions is a genius at being a lion’. If that were

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Bird Brains and Intelligence

Birds are one of the most intelligent groups of animals, but their general abilities are much harder to compare than we find for primates. A very high avian ability at one particular tasks does not as consistently suggest high cognitive abilities in other tasks,

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How Intelligent are Pilot Whales: A new Algorithm

On a previous page , I rated pilot whale intelligence highly, but I never fully explained why. The reasoning ran as below. Science is yet to find a metric that correlates more closely with intelligence raw brain size. The only other

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