Some people are surprised to know how common urinary tract infections are in puppies. There are some specific reasons for this:
Since puppies are usually in the process of being potty-trained, having an accident in the house may not be the red flag it would be with an older dog. That enables the untreated urinary tract infection to become more serious.
Another reason is due to the high energy level of puppies. If they are not drinking enough water, the urine in the bladder becomes more concentrated and that can lead to an infection.
Not getting your dog spayed can also lead to urinary tract infections. The pH changes as your female dog goes through puberty. Getting your pup fixed before the first heat will prevent this imbalance.