How Can I Stop My Dog From Trying To Attack My Kitten? My Dog Is A Three Year Old Labrador.?

My dog is a three year old lab, the kitten is an eight week old tabby. I also have a six year old Bengal cat which can stand up for himself. I would be greatful for some useful advice as my children aswell as myself and partner have grown very attached to the little fella and we really don’t want to part company with him.