There are many complications of renal failure your cat or dog can face with renal complications. Some complications can include:

1. Hypertension (High blood pressure) Note: aggressive behavior is a sign
2. Acidosis (acidity which makes your pet eat less and urinate with difficulty)
3. Anaemia (pale gums in color and dullness are some signs)

If you notice any of these signs in your pet, further consult with your local veterinarian.

Dr. Muhammad (DVM) - University of Veterinary & Animal Sciences (UVAS)

DISCLAIMER: All questions have been written purely on experience-based facts and researching authentic scientific publications by a certified veterinary physician. All Rights reserved. You should always seek further advice from your own local veterinarian.