We investigated lead (Pb) concentration in 44 commercial and domestic pet snacks (for dogs, n=37: for cats, n=1: for dogs and cats, n=6) mainly consisting of venison, and compared the maximum Pb levels to ensure safety in all kinds of commercial pet foods as directed by the Japanese Ministry of Agriculture, Forestry and Fisheries (MAFF), and in the complementary feed directed by the European Union. The Pb concentrations were below the limit of quantification (0.019 mg/kg fresh wt) in 30 of the 44 pet snacks. Only one out of the remaining 14 snacks had the Pb level exceeding the maximum limit prescribed for commercial pet foods as fixed by the Japanese MAFF; however, this level was below the maximum stipulated by the European Union for the complementary feed. We also examined the Pb isotope ratios for identifying Pb contamination source in the snack with high Pb content; however, the source of contamination could not be clarified. These results indicate that Pb does not probably pose a health risk to dogs and cats in the pet snacks mainly consisting of venison examined in the present research. However, continued attention should be paid to the Pb contamination in venison and other wild game meat used in pet foods.