The prints pictured are from a large dog. Coyote prints are very distinct, with the two center toes being "pigeon-toe'd," and pointing to 12 o'clock. The pads are also more "oval" than a dogs. Google "coyote paw print" and view some of the images, there are some great examples online.
My wife (Lou-Ann) and I (Kim), have a small ranch in Northern California. I grew up on a ranch, my wife, she's a city girl, so life here is an on-going lesson for her. She is a recently retired RN, so her new 24/7 life is quite a culture shock :)
We raise Show quality Boer Goats, and chickens...