Visual signaling from biologically - inspired
robots has been used to investigate the behavior of birds [27]--[31], dogs [32], lizards [33], fish [22], [34]--[42], and rats [43]; salient chemical cues have been implemented on a miniature mobile
robot to investigate
social behavior of cockroaches [44]; audio feedback has been integrated in a model of a robotic squirrel to influence squirrels» behavior [45]; pulsing air currents
created by robotic honeybees have been used to investigate honeybees» dance [46]; and hydrodynamic cues from a swimming robotic fish have been considered in [20] to modulate fish behavior in a water tunnel.
The Personal Robotics Group at the Massachusetts Institute of Technology has been working for years to
create «highly expressive humanoids,» including a
social robot called Leonardo and a robotic real estate agent named Rea who exists in a virtual world where people can ask questions about buying property.