Whether your dog is howling or running in circles to chase their tail - many of their habits and behaviors are undeniably strange. In some cases, your pup may be trying to communicate with you, but others are just in their DNA - like digging, for example. Are you struggling to decipher your dog's new habits? Understanding your pet will undoubtedly improve the relationship you have with them.Walking in Circles Before Lying DownAlthough this behavior isn't anything to worry about, it can be irritating to watch your dog walk in circles over and over again - especially when you know it's not changing the comfort level of their bed. Don't blame them, though, behaviorists believe this is a habit passed down through the generations. Their ancestors that lived in the wild used to do this when they needed to flatten out the grass (or other debris) beneath them before lying down - and now, our domesticated canines have inherited the behavior.Eating Grass & FecesGrass is not as gross as feces, but still strange nonetheless. If you've noticed that your dog has been eating either grass or feces (or both) - don't be alarmed. Contrary to popular belief, feces isn't actually harmful for your dog, although watching them eat it is definitely disgusting. On the other hand, some people believe that dogs eat grass when they have an upset stomach - and while this may be true in some cases, it's more likely that your dog enjoys grazing occasionally. It shouldn't normally induce vomiting, although it may, and especially if they were already feeling queasy."Reverse Sneezing"Although you'll probably hear it referred to as "reverse sneezing," if it looks or sounds like your pup is choking or can't breathe as air is pushed through their nose quickly and loudly. However, it's really nothing to worry about - just as sneezing is common for us, this "reverse sneezing" is common for our dogs. It should only last a couple minutes and will typically sound like loud, excessive snorting. As soon as it's over, they'll go back to breathing normally again!