Final answer:
Owners need to clean their animals' fur and skin after expressing their bladders to avoid urine scalding, a condition caused by prolonged urine contact leading to skin irritation and possible infection.
Step-by-step explanation:
Owners who express their animals' bladders should clean the fur and areas after expressing to prevent urine scalding. Urine scalding is irritation and possibly infection caused by prolonged contact with urine, which can occur if the area is not cleaned properly. To avoid this, owners should use mild soap and water to cleanse the area after expressing the bladder and ensure it is thoroughly dried. It's also advisable to check the skin regularly for signs of redness or irritation, which could indicate the beginning of urine scalding or another skin issue.