An apparatus for inhibiting melatonin synthesis in a horse comprises a blinker having an internal surface of which at least a part is diffusing. A source of light is positioned for direction into the horse's eye by the diffusing-surface. The light source and diffusing surface are configured such that the light directed into the horse's eye is blue.

An apparatus for inhibiting melatonin synthesis in a horse comprises a blinker having an internal surface of which at least a part is diffusing. A source of light is positioned for direction into the horse's eye by the diffusing-surface. The light source and diffusing surface are configured such that the light directed into the horse's eye is blue.

There is disclosed a control device for an equine, comprising a hood adapted to be positioned over a head of the equine, the hood having a pair of eye openings to accommodate the equine's eyes; a retractable cup member mounted at least partially about the eye openings of the hood; and an activation device mounted on said hood so as to be activated by a rider of the equine to move the retractable cup member between a non-activated state and an activated state; wherein when the retractable cup member is in the non-activated state the retractable cup member does not substantially restrict the field of vision of the equine and when the retractable cup member is in the activated state the retractable cup member restricts the field of vision of the equine.

Provided are an animal control device and an animal control system including the same. The animal control device includes a sensor configured to detect movement of an animal, and a visual field blocker disposed to block a visual field of the animal, and having a light transmittance which is controlled according to a signal detected by the sensor.

Provided are an animal control device and an animal control system including the same. The animal control device includes a sensor configured to detect movement of an animal, and a visual field blocker disposed to block a visual field of the animal, and having a light transmittance which is controlled according to a signal detected by the sensor.

An apparatus for inhibiting melatonin synthesis in a horse comprises a blinker having an internal surface of which at least a part is diffusing. A source of light is positioned for direction into the horse's eye by the diffusing-surface. The light source and diffusing surface are configured such that the light directed into the horse's eye is blue.

An apparatus for inhibiting melatonin synthesis in a horse comprises a blinker having an internal surface of which at least a part is diffusing. A source of light is positioned for direction into the horse's eye by the diffusing-surface. The light source and diffusing surface are configured such that the light directed into the horse's eye is blue.

An apparatus for inhibiting melatonin synthesis in a horse comprises a blinker having an internal surface of which at least a part is diffusing. A source of light is positioned for direction into the horse's eye by the diffusing-surface. The light source and diffusing surface are configured such that the light directed into the horse's eye is blue.

An apparatus for inhibiting melatonin synthesis in a horse comprises a blinker having an internal surface of which at least a part is diffusing. A source of light is positioned for direction into the horse's eye by the diffusing-surface. The light source and diffusing surface are configured such that the light directed into the horse's eye is blue.

An apparatus for inhibiting melatonin synthesis in a horse comprises a blinker having an internal surface of which at least a part is diffusing. A source of light is positioned for direction into the horse's eye by the diffusing-surface. The light source and diffusing surface are configured such that the light directed into the horse's eye is blue.