In this first edition of the of the One Health Day at UFRRJ we will be introducing the concept of One Health and exploring current and future applications and challenges. Guest speakers will be addressing issues regarding zoonosis and neglected diseases and the effects of animal production and pollution on the environment. We will provide the opportunity to bridge the boundaries between undergraduate and graduate courses currently offered by the University through the presentation and discussion of ongoing projects within the scope of human, animal and environmental health.