>>14164543>>14164713the parts of the brain required for movement, that grow in size as an animal gets larger, are not the parts of the brain that are related to human intelligence. the encephalization quotient is a dated method that is good for measuring animal intelligence relative to other animals of the same size, it does not give an accurate measure of intelligence relative to a human if the animal is notably different to us in size. a mouse would need an absurdly large encephalization quotient to be comparable to a human, and likewise an elephant would need a comparably tiny encephalization quotient to be comparable to a human.
to put this into perspective, an elephant has an EQ of only 1.2, despite being notably smart animals. this is because the ratio of cortex to overall body mass is significantly smaller than your average animal due to them being up to 13,000+lbs.
orcas are actually of a very similar size to elephants, only slightly smaller, yet have an EQ of 2.5, slightly more than double the EQ of an elephant, and orcas are undeniably one of the smartest animals on earth.
the reason that humans seem to be smarter likely comes down to the differences in brain composition in ocean mammals, the more intense requirements of maneuvering and understanding a 3D environment, the brain hemisphere division they use to sleep leading to redundancies, etc.
