Dogs are intelligent as two-year-old children

Researchers have found that dogs are capable of understanding up to 250 words and gestures, can count up to five and can perform simple mathematical calculations. Using tests originally designed to demonstrate the development of language, pre-language and basic arithmetic in human children, the researchers were able to show that the average dog is far more intelligent than they are given credit for.
They have also compiled a list of the most intelligent and least intelligent breeds using information from obedience classes. Border collies and retrievers were rated among the most intelligent while hounds and terriers were the least bright.
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