A light emitting device to awaken or alert an animal by stimulating the Suprachiasmatic Nucleus in the brain to suppress melatonin secretion and change gene expression in the brain. The device can be programmed for an initiation time, color of light, brightness, frequency of pulsating light, and level of gradual intensity. It has the advantage of being silent, does not to disturb other people sleeping in the same room and user is more cognitively alert.
