V00042 Bison Bull Cow Calf Resting Herd Black-Tailed Prairie Dog in Summer by Pronghorn Productions in Bison , Mammal , Ungulate Full HD (1920x1080) – $19 HD (1280x720) – $9 Add to Cart Checkout Added to cart Bison Bull Cow Calf Resting Herd Black-Tailed Prairie Dog in Summer $19