By Martin Deeley Just as a person’s behavior and attitudes can change for the worse when they’re sick, a dog’s behavior problems may be the result of health issues. Housebreaking Let’s take one common behavior problem: housebreaking. Nothing gets dog owners more frustrated than their dog soiling the house. Consider the dog’s age and previous cleanliness record. Soiling the house can occur for a number of reasons, but if a dog suddenly begins to do this or is urinating many times in small quantities, I always suggest taking an early morning sample and getting it to the vet for analysis.