Author Brandon McDonald Troi Perkins Robert Dunn Jennifer McDonald Holly Cole R. Feranec Roland Kays McDonald, Brandon, Perkins, Troi, Dunn, Robert, McDonald, Jennifer, Cole, Holly, Feranec, R., Kays, Roland, 2020. High variability within pet foods prevents the identification of native species in pet cats’ diets using isotopic evaluation. PeerJ 8, e8337. doi:10.7717/peerj.8337