Third, the game of hide and seek brings together children ... when the older player covers his face, then the baby believes the player has gone away. The joy in seeing the face return comes ...

and performed “joy jumps”, which prior research found is another indicator of happiness. So, what is going on in a rat’s brain when they play hide-and-seek? Brecht and his team implanted wireless ...

Rats can be taught to play hide and seek – and they squeal with joy when they win, scientists have found. Both wild and domesticated animals have been known to play, but neuroscientists from ...

During the hide-and-seek sessions, they would emit ratty giggles. (Though they are three times higher than audible range of humans.) They also performed little freudensprung or “joy jumps ...