In recent years, researchers have found that a wide variety of animal species, many of the cognitive skills that were once thought to be unique to humans. These findings show that we have grossly underestimated the intelligence of other animals, and that we are not as different from them as we like to think we are.
So, below are 5 amazing feats of animal intelligence which have been observed (and, in some cases, captured on film) over the past few years.
1. Plotnik et al (2006) have shown that elephants are capable of self -awareness. In the film clip below, the elephant recognizes itself in a mirror, and uses its trunk to try to remove a piece of tape stuck to its head.
2. Lin et al (2007) have shown that mice can think abstractly. This clip shows electrophysiological recordings taken from cells in the hippocampus of the mouse, which fire selectively when the animal enters an appropriately sized compartment that can be used as a nest.
3. Grosenick et al (2007) established that African cichlids can use simple logic to infer their position within a social hierarchy.
4. In a study published just last week, Osvath and Osvath showed that chimps can plan for the future. Last year, Raby et al showed that scrub jays are also capable of prospection.
5. Last, but by no means least, Hunt and Gray (2004) have observed the extraordinary tool-making abilities of the Caledonian crow. Watch this crow select an appropriate twig, prune it by removing unwanted side-twigs, then finally sculpt a fine hook from it with its beak.
Related:
- But do chimps look forward to sex?
- Birds plan for the future
- Avian intelligence
- Fish use simple logic to infer their social status
- The "I'm in bed cell": Encoding abstract concepts in the mouse brain
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Brain & Behavior
Comments
What you show is that there is less separation between us and the animal kingdom than we care to acknowledge. Anybody that has a dog or cat knows that these animals establish a form of communication that's all their own.
So I guess that question is this: does exhibiting these skills make them more human, or does it make us more like animals?
Hiram - the balanced health guy
Posted by: The Balanced Health Guy | June 23, 2008 5:20 PM
Representations of animals partaking in intelligence of which humans have arrogantly claimed as a species specific trait, has never been valid in my perception, and I was pleased to read evidence of such. We are so closely related to other mammals and rival in genetic complexity, that I presume it would be ignorant to claim genetic superiority. As evolution has brought us about, so will it for other species... right? Assuming we allow a few to enjoy survival... Some of our intellectual advances came about in a few hundred thousand years. What of mice, in two hundred thousand more?
Posted by: KAS | June 23, 2008 10:51 PM
Yes, animals are very smart.
My money says that they do not have consciousness. And so there is a great difference between humans and the rest of the animal kingdom (ignoring the obvious great differences that include no animals reading and commenting on internet blogs...)
Posted by: Rich Beckman | June 23, 2008 11:38 PM
That's amazing about the elephant. Thanks for another educational and entertaining post.
Posted by: Damien Riley | June 25, 2008 12:56 AM
I'd probably take the elephant video with a grain of salt. We discussed this paper in a class last semester. First of all, it wasn't tape, but a mark made with a substance that was not supposed to cause tactile sensation or scent, to control for the elephant just reacting to a smell or an itch, rather than purely visual information.
And they tested three elephants. Only one performed above chance on the mark test, but that behavior was not replicated in repeated trials (as I recall). Their excuse was that the elephant had become habituated to the mark, which made me wonder why they didn't vary the stimuli (e.g. move it to another spot or use a different color).
Also, they made the claim that the organisms passing the mark test progress through several stages involving attempts at social interaction (i.e. treating the reflection as someone to socially interact with), self-exploration, etc. But they explicitly state that the elephants didn't attempt to socially interact with their reflections.
Mark test experiments with dolphins are also highly open to interpretation (dolphins cannot touch their face or body) and have not been repeated and verified extensively. Although the evidence for chimps and orangs passing the mark test is very strong.
Posted by: Derek James | June 25, 2008 11:58 AM
Go to YouTube.com and search for "elephant self portrait." There are several very impressive videos.
Posted by: Davej | June 27, 2008 3:30 PM