![Sentinel Spectrum Chews for Dogs 25.1-50 lbs (11-22 kg) - Yellow 6 Chews | Discount Pet Medication USA Sentinel Spectrum Chews for Dogs 25.1-50 lbs (11-22 kg) - Yellow 6 Chews | Discount Pet Medication USA](https://cdn11.bigcommerce.com/s-itrx3/images/stencil/2048x2048/products/164/529/sentinel_spectrum_yellow_26_50lb_6_month__06843.1446947245.jpg?c=2)
Sentinel Spectrum Chews for Dogs 25.1-50 lbs (11-22 kg) - Yellow 6 Chews | Discount Pet Medication USA
![Sentinel Spectrum Heartworm + Flea + Worms Merck - Safe.Pharmacy|Heartworm Prevention + Flea | Dog R Sentinel Spectrum Heartworm + Flea + Worms Merck - Safe.Pharmacy|Heartworm Prevention + Flea | Dog R](https://www.valleyvet.com/swatches/1204RX_L_vvs_000.jpg?v=080920211026)
Sentinel Spectrum Heartworm + Flea + Worms Merck - Safe.Pharmacy|Heartworm Prevention + Flea | Dog R
![Sentinel Spectrum Heartworm + Flea + Worms Merck - Safe.Pharmacy|Heartworm Prevention + Flea | Dog R Sentinel Spectrum Heartworm + Flea + Worms Merck - Safe.Pharmacy|Heartworm Prevention + Flea | Dog R](https://www.valleyvet.com/swatches/1205RX_L_vvs_000.jpg?v=080920211026)
Sentinel Spectrum Heartworm + Flea + Worms Merck - Safe.Pharmacy|Heartworm Prevention + Flea | Dog R
![Sentinel Spectrum Chews (milbemycin oxime/lufenuron/praziquantel) for Medium Dogs, 25-50 pounds, 6 doses - Pet Supplies Delivered Sentinel Spectrum Chews (milbemycin oxime/lufenuron/praziquantel) for Medium Dogs, 25-50 pounds, 6 doses - Pet Supplies Delivered](https://www.petsuppliesdelivered.com/assets/Image/Product/thumb/Merck-Sentinel-Spectrum-25-50-rx-dog.jpg)