Sera of 22 moose (Alces alces), collected in the Cypress Hills Park in Alberta, were tested for Infectious Bovine Rhinotracheitis (IBR), Bovine Virus Diarrhea (BVD) and Parainfluenza 3 (PI3) antibodies. Neutralizing antibodies to BVD were detected in four of the 22 sera and hemagglutination-inhibiting antibodies to PI3 were detected in three of the 22 sera. No neutralizing antibody to IBR was found in any of the sera.