With great intelligence, many animals know how to use tools to get food, cook food or add spices to food.
African gray parrot Alex - an international star, at least for fans of science shows - is known for his ability to speak strangely.
An African gray parrot trained by the owner how to sing the tune of the famous football song, to cheer the England team at the 2014 World Cup.
African gray parrots have the ability to deduce finding a place to hide food, which only humans and monkeys can do, a study says.