Pet Naturals Daily Probiotic for Dogs, Duck Flavor, 160 Chews - 120M CFUs Pre and Probiotics for Dogs Digestive Health, Gut Health, Immune Support, Diarrhea, Allergies and Itching Dog 160 Chews is up for auction in Pet Supplies. The current bid is $6.05, 65% below the $17.49 MSRP, in New/Like New condition. This auction has ended — similar items appear in live auctions regularly.