Q. Nothing is wrong with my dog I currently know of, I would just like to know if there are any warning signs for, if your dog swallows a ballon/rubber.
A. I would watch for any signs of illness, including any: vomitting, excessive or no eliminating, pain, swelling, lethargy, generally looking or feeling unwell, loss of appetite etc.
Sometimes foreign objects are small enough to pass on their own with little or no problem. They can cause blockages, obstructions though, and in severe cases require surgery to remove or death.