The border traverses a variety of terrains, ranging from major urban areas to uninhabitable deserts. Approximately 350 million legal crossings occur annually, and is the most frequently crossed border in the world. The total length of the continental border is 1,954 miles (3,145 km).
Only a veterinarian will know what's wrong with your dog but usually stumbling, wobbling and falling down is associated with neurological problems, especially if there aren't any other signs. I would really take him to the vet as soon as you can.
If you notice your dog is not passing regular bowel movements, an intestinal blockage may be to blame. A complete blockage prevents any stool from passing. With a partial blockage, small amounts of stool can pass, but you may notice your dog straining when he tries to go.If the obstruction is jagged, internal tearing is possible. Signs of blood or mucus may be evident in stool.f you notice your dog is not passing regular bowel movements, an intestinal blockage may be to blame. A complete blockage prevents any stool from passing. With a partial blockage, small amounts of stool can pass, but you may notice your dog straining when he tries to go.