INDIANAPOLIS, Ind., Dec. 31, 2025 /PRNewswire/ -- Elanco Animal Health Incorporated (NYSE: ELAN) today announced its latest entry into the rapidly growing canine dermatology space with the U.S. Department of Agriculture (USDA) approval of Befrenaâ"¢ (tirnovetmab), a new anti-IL31 monoclonal antibody (mAb) injection targeting canine allergic and atopic dermatitis. Importantly, Befrena is recommended at a dosing interval of 6 to 8 weeks post-treatment, which stands in contrast to the 4 to 8 weeks of the curre ...