They interact differently with humans and other pets

As some of you probably know, canine dementia can be found in dogs that react differently around other pets and humans. If your dog has been socialized and interacts well with other animals or family members and has suddenly become irritated by those around them, then there is a possibility that they have developed this disease.

“He may be acting this way because he’s in pain. He could have arthritis or some other ailment that hurts when he moves or is touched. Your vet may want to do X-rays to rule out a painful condition,” explains Dr. Petryk.

So, all you have to do is to talk to your vet about their behavioral changes, because he or she can help you with proper treatment. 

In addition, some dogs can become aggressive. “Aggression toward family or friends [is] due to lack of recognition,” Dr. Turnera Croom, a holistic veterinarian, tells Bustle. “The aggression that the dog may display confuses human family members prior to a definitive diagnosis.”