Figueira, Milene Paula, Fernanda Fatima Rodrigues Silva, Alice Ribeiro, Ita Oliveira Silva, and Vanner Boere. “Olfactory Stimulus As Environmental Enrichment for Shelter Dogs: A Pilot Study”. Brazilian Journal of Veterinary Research and Animal Science 60 (April 18, 2023): e203068. Accessed May 1, 2024. https://www.revistas.usp.br/bjvras/article/view/203068.