The entomologists of Queen Mary University of London found that bees can have positive or negative feelings, reports the Planet-today. For example, bees feel joy, when they eat sweet. In order to prove that hypothesis, the scientists gave bees sweet and measured intensity of their buzz. 

As one of the researchers say, the bees that are in good mood are buzzing more intensely than the ones in bad mood. According to him, the research team recorded the behavior of insects for several months, and the data analyses allowed to make accurate conclusions.