1.) Soft Eye Contact. You’ll notice that your dog’s eyes are round in shape with the pupils dilated for the current light levels. This is also commonly seen with a relaxed tail wag. Overall, this means that your pup is feeling friendly and confident.
2.) The Direct Stare. If you see a dog staring at you with their body standing tall and assertive, this means that they don’t like what you’re doing or your presence. It’s best to keep your distance or you might be bitten.
3.) Squinting. This could be a couple of different things. Your dog might be afraid or, if they’re approaching you, it could just be a friendly social expression. One way to tell the difference is if the dog has their body posture back and lowered. If you see this behavior, they might be afraid which could lead to a bite if you approach.
4.) Avoiding Eye Contact. This normally isn’t a big deal. The dog is saying that they’re fine with you and it’s okay if both of you just go about your business.
One thing to keep a look out for are sudden changes in behavior that could mean anything from being in a stressful situation to health issues. For example, if your dog starts to become distant and lazy, they might be suffering from health problems. At PURELUXE Pet Food, we believe in eliminating as many variables as possible by feeding dogs and cats the best transparent food on the market. Remember, better food often equals better health outcomes. See all of our dog and cat formulas at pureluxepetfood.com
Source
-https://www.whole-dog-journal.com/behavior/body-language/your-dogs-facial-expressions/