Welcome....Your boxer needs to have a urinalysis done at your Vet's office.....Sudden urination suggests a medical issue, NOT just old age.....
I agree w/ Love my Bostons, he needs to be checked for a UTI...Antibiotics from your Vet will clear it up...Make the call, today...UTI are very painful and your dog cannot tell you! Good luck and let us know what you find out.....Karla
It's probably just because he is getting old. My dog is 15 years old and she has cloidy eyes...which means they are loosing their vision. She always rums into doors and walls. But i really dont think there is anything you can do about. But you could try putting diapers on him to stop him from weeing everywhere. Hope this helped!
I would take him to the vet. He might have a urinary tract infection. They can also test his vision. It sounds like he has developed a cataract.