Which animal is the most intelligent? In what aspect?All animals, from ants to elephants, make decisions. And nature's critters continuously surprise humans with their thinking abilities. Of course, it's hard to make a definitive ranking since measuring animal intelligence is problematic. Brain size, vocabulary, tool use, and social learning are common metrics of animal smarts, although it's difficult to compare between species since most intelligence tests or tasks are designed for a specific animals. Animals evolve certain kinds of cognitive abilities to deal with pressures in their natural habitat. For example,Chimpanzees can make tools to hunt. Dogs may not use tools, but it doesn't make them less bright. They're just good at other things.In my opinion, the most intelligent animal is dog,"In many ways dogs may be more human-like than any other species, even non-human primates," researchers wrote in a 2008 dog intelligence study published in the Journal of the Experimental Analysis of Behavior.In a separate study, Brian Hare, an expert in canine cognition, showed that dogs can follow and respond to human gestures, like pointing and eye movements, without training. This so-called "theory of mind" ability "is so important to our species," writes Slate's David Grimm, "that without it, we would have trouble learning and interacting with the world around us." One the smartest dogs in the world (or at least with the most impressive vocabulary) is a border collie named Rico. Rico knows the name to more than 200 items — he can retrieve the object from a jumble of stuff after hearing the name only once. (Rico also took third prize in De Waal's "Animal Noble Prizes")Another dog, Chaser, knows more than 1,000 objects and can understand English grammar. She isn't the first animal to have a basic understanding of grammar. Studies published in the journal Cognition in 1984 indicated that dolphins can also grasp elements of grammar. Apes have as well, including Kanzi the bonobo. Conclusion, it is loyal with people, I love it.
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