Overview: A New Anti-IL31 Monoclonal Antibody for Dogs Elanco announced USDA approval for Befrena™ (tirnovetmab), a novel anti-IL31 monoclonal antibody injection designed to help dogs manage allergic and atopic dermatitis. As the canine dermatology market grows—estimated at about $1.3 billion in the United States—Befrena represents the company’s second dermatology product approval in under 18 months,…