Monteiro, Eduardo Raposo, Fabricia Mateus Picoli, Marisa Guizeline de Oliveira Queiroz, Daniela Campagnol, and Juliany Gomes Quitzan. 2008. “Sedative and Cardiorespiratory Effects of Methadone, Alone or in Combination With Acepromazine or Xylazine, in Cats”. Brazilian Journal of Veterinary Research and Animal Science 45 (4): 289-97. https://doi.org/10.11606/issn.1678-4456.bjvras.2008.26688.