5. Memory
Humans are able to mentally capture their sensory
information at a particular time and store it away for later use. That
is, humans can remember things. We use memories to determine the best
course of action in situations we have encountered before, such as
remembering which foods taste nicest and thus picking the best one when
given a choice. Animals, too, have memories, as any pet owner will tell
you. Domesticated creatures can be taught to remember commands, and even
goldfish have been shown to have memories lasting months. Chimpanzees remember images and numbers better than university students, and crows remember shapes better than adult humans also. Some jays and squirrels
have superb spatial memories, allowing them to remember months later
where they buried thousands of seeds across areas of dozens of square
kilometers. Cats have short-term memories at least ten times longer than
those of humans. Interestingly, pigeons seem to base superstitions on
their memories. If a pigeon is doing something like turning around when
it is given food two or three times, it will remember what it was doing
and begin to spin obsessively in the hopes of obtaining more food.
4. Self-Awareness
A jellyfish, most will agree, is
not strongly aware of itself as a definitively separate being. It has
no thoughts, if any, beyond its basic drives. Self-awareness was
considered a human domain for many years, but we now know better. One
simple illustrative test is the mirror test: seeing if an animal can recognize itself in a mirror.
A self-aware animal will realize that the movements of its reflection
match its own, and deduce that the reflection is an image of itself. The
animal often has a mark on its face, and if it realizes that the
reflection is it itself, it will reach towards its face to feel or
remove the mark. Human children do not pass this test until the age of
18 months. Animals which pass this self-awareness test, and a variety of
other such tests, are all great apes, some gibbons, elephants, magpies, and some whales.
3. Intelligence
Humans are homo sapiens, the
wise man. We can think and reason to our great advantage. There are, of
course, many different kinds of intelligence and ways of using them.
There exist many definitions of
intelligence, but generally it is thought to be the ability to think,
reason, plan, assess, and learn. However, humans are not the only
animals with intellect, nor are they the best in all its categories.
Pigeons easily outdo humans with both visual searching and geometric
recognition. Ants estimate huge numbers very accurately to determine the
numbers of enemy ants from past encounters, and elephants use
arithmetic. Crows show great causal reasoning; they can observe a new
and complicated mechanism and mentally deduce how to deal with it
correctly rather than relying on the more time-consuming trial and
error. They can unlock doors and find hidden objects based on a single
period of observation, outperforming many humans.
2. Farming
Farming is the basis of modern
human civilization. Believed to have been begun nearly ten thousand
years ago, it allowed humans to settle in one place rather than live
nomadically as they followed herds of animals for food. This in turn
allowed them more time in which they could develop writing, mathematics,
the wheel, farming implements, and other necessities of farming on a
large scale. This spread around the world rapidly. However, ants had
already been farming for millions of years. They capture, herd, raise,
and care for the health of groups of caterpillars kept in a special
chamber of their nests so that they may use their sugary excretions as a
food source, much like we use cows. Termites cultivate fungi to eat which are so specialized they grow nowhere else on Earth.
1. Building
If nothing else, humans are fantastic builders.
The cities, roads, and factories that adorn our planet are a testament
to that fact. What other animal could build skyscrapers, towering
hundreds of metros above them? Or highways and roads stretching for
thousands of kilometers? Some animals build too. Certain birds and apes
build sophisticated nests, rabbits dig warrens to live in, and ants will
even prune and cultivate trees to grow in a way which suits them as a
home. The greatest builders, however, are Nigerian termites. They build fantastically huge mounds with internal ventilation, heating, and cooling systems through specially designed tunnels so that the termites
living inside enjoy a pleasant climate at all times. They even have
self-contained nurseries, gardens, cellars, chimneys, expressways, and
sanitation systems. A termite is less than half a centimeter long yet
its mound is 4m tall. For comparison, that is like a group of humans
making a building over 1.5km tall.
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