Category: Intelligence

Breakthrough Research on Cetacean Intelligence

This month, a paper was published in Nature Ecology & Evolution that was of immense importance to this website. In this post I will only comment on the paper itself, but I expect its data and supplementary files to be

Recent Findings on Octopuses, Dinosaurs, and Galactic Empires

Paths to the rise of intelligence are of general interest to us. The paucity of direct testing on cetaceans makes the topic of peculiar interest to this website. How Clever are Octopuses? It’s more difficult to gauge the intelligence of

Does Eating Fruit Lead Brain Evolution?

There has been a dearth of important academic papers directly pertaining to cetacean intelligence over these past few months. Today I post my much delayed analysis of a significant paper on primate intelligence. It was published in Nature Ecology &

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,

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

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

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

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

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

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