The U.S. Food and Drug Administration last week approved Zenrelia, or ilunocitinib tablets, a new veterinary drug from Elanco Animal Health, Inc., based in Greenfield, Indiana, to control pruritus, or itching, associated with allergic dermatitis and to control atopic dermatitis, or environmental allergies, in dogs that are at least a year old. According to Elanco Animal Health, itching is one of the top reasons pet owners take their dogs to the veterinarian, and pet owners...