It's not so easy to measure how smart an animal is. Here's why: It depends on what job you test them on. No one test or routine accurately measures the smarts of all animals. Some animals are experts in learning one way, but not another way.
http://www.nwf.org/Kids/Ranger-Rick/Animals/Mixture-of-Species/What-are-the-Smartest-Animals.aspx
Animals that are considered to have passed the MSR test typically exhibit 4 types of behaviors on facing the mirror: 1  Social responses. 2  Physical inspection, e.g. constantly looking behind the mirror. 3  Testing the mirror repeatedly.  Realizing that they're seeing their own reflections.
https://www.quora.com/What-is-the-smartest-animal-on-Earth-not-counting-human-beings
Explainer: The world’s 10 smartest animals. We humans have the ability to learn, to reason and solve problems. We're self-aware, and we're also conscious of the presence, thoughts and feelings of others. We make tools and practice the art of deception. We're creative. We think abstractly.
http://www.nbcnews.com/id/24628983/ns/technology_and_science-science/t/smartest-animals/
There are some surprising entries on a new list of intelligent animals, including a small lizard and a furry animal that might be in your home now. Creatures both big and small made the list of the top 10 most intelligent organisms on the planet, proving that bigger isn't always better when it comes to brains.
https://www.seeker.com/top-10-most-intelligent-animals-1769644805.html
As you can see, scientists don't necessarily agree, and the list often changes: 1  Dolphins. 2  Chimps and orangutans. 3  Elephants. Parrots (To discover one very smart parrot, click here on this link: African-Gray-Parrots  ) Crows (To read more about how smart crows are, click here: Bird- 1 Brains  ) Dogs.
http://www.nwf.org/Kids/Ranger-Rick/Animals/Mixture-of-Species/What-are-the-Smartest-Animals.aspx
The Eurasian Magpie (Pica pica) is the only bird (in fact the only non-mammal) which is conclusively known to have passed the MSR test with flying colors. Researchers applied a small patch of red, yellow or black sticker to the throats of 5 Eurasian Magpies. The stickers could only be observed via a mirror.
https://www.quora.com/What-is-the-smartest-animal-on-Earth-not-counting-human-beings
A standard test to determine the intelligence and self-recognition capabilities of a species is the mirror self-recognition (MSR) test. This test, which was developed by Gordon Gallup Jr. in the 1970s involves performing some modification on the animal's bodily appearance and placing it in front of a mirror.
https://www.quora.com/What-is-the-smartest-animal-on-Earth-not-counting-human-beings
Still, here are the 10 smartest, or most intelligent, animals according to one famous scientist, Edward O. Wilson: 1  Chimpanzee. 2  Gorilla. 3  Orangutan. Baboon. 4  Gibbon. Monkey.  Killer whale and several other so-called toothed whale 1  species. Dolphin. 2  Elephant.  Pig.
http://www.nwf.org/Kids/Ranger-Rick/Animals/Mixture-of-Species/What-are-the-Smartest-Animals.aspx
Email. 1  Creatures both big and small made the list of the top 10 most intelligent organisms on the planet, proving that bigger isn't always better when it comes to brains. The new list, created by neuropsychiatrist Jon Lieff, includes animals that have been widely known for their smarts, as well as some surprising entries.
https://www.seeker.com/top-10-most-intelligent-animals-1769644805.html
Top 10 Smartest Animals. No. 10 in our countdown of smartest animals is the rat, a highly intelligent yet much-maligned animal in Western cultures. Widely used in research, the lab rat has been known to find shortcuts, loopholes and escape routes in the laboratory experiments designed by the top scientific minds of our time.
http://animals.howstuffworks.com/animal-facts/10-smartest-animals.htm
what is the smartest animal on earth?
Chimpanzee is the smartest animal on earth.