Fig 3. Stable isotope analysis of the diets of dogs in two settlements in Chad.

Settlements are A) Kakale and B) Magrao. i) The δ¹⁵N and δ¹³C values for sampled dogs (black dots) and the mean ± standard deviation of δ¹⁵N and δ¹³C for putative food groups. Trophic discrimination factors, derived from package SIDER, have been applied to adjust dog isotope ratios downwards for both δ¹⁵N and δ¹³C. ii) Outputs of Bayesian mixing models, from package SIMMR, of the proportional contributions of the main food groups to dog diets.