It isn't possible to actually, for sure, know what a dog is feeling. Assumptions are made based on the body language of the dog, and possibly the environmental circumstance, and this absolutely pulls from the person's learned history with dogs and other animals.

Learn how to deal with an LGD barking at new livestock without using aversive training methods.

It is important to stay with dogs while they eat if resources are a concern for either dog. In this instance, I am giving Yeti a cue to...