The reason why dogs have large mouths is because their bone structure and muscle structure allow their mouths to open very wide. Dogs have large mouths to be able to bite and hold objects, which is very important for dogs to eat and hunt. Dogs also have extremely large jaws, which allow them to bite very tightly, which is especially useful when the dog is protecting itself or its owner. Different breeds of dogs have different-sized mouths. Some breeds have much larger mouths than other breeds, while other breeds have smaller mouths.
This is mainly because different breeds of dogs have different genetic genes, and these genes determine the dog's appearance characteristics. Including mouth size. In general, dogs’ mouths are large to accommodate their lifestyle and needs.
