Devices and methods for low-level laser light therapy for animals and plants are provided. A device can include a pulse generator configured to generate a pulse train, wherein a pulse wave of the pulse train is configured to have a rectangular, non-sinusoidal waveform and a duty cycle within a range of 0.5% and 20%, an emitter array comprising a plurality of light emitting diodes (LEDs) and in electrical connection with the pulse generator, a computer-readable medium comprising stored instructions which, when executed, cause an LED to emit light, and a housing unit.
