The present invention relates to an animal feed additive for pets comprising live lactic acid bacteria, GABA, and essential amino acids, which has an effect of providing a functional feed additive for improving bowel and brain health of pets. The animal feed additive of the present invention is prepared by the following steps: mixing freeze-dried powder of lactic acid bacteria, GABA, and L-glutamic acid adding fructooligosaccharide to the mixture of the previous step to increase the recovery rate of the live lactic acid bacteria.COPYRIGHT KIPO 2018본 발명은 생유산균, GABA 및 필수아미노산이 첨가된 반려동물용 사료 첨가제에 관한 것으로 장 및 뇌 건강 개선 기능성 사료 첨가제를 제공하는 뛰어난 효과가 있다.