What causes sudden erratic behavior in dogs?

Health issues that can change your dog’s behavior include arthritis, hip dysplasia, luxating patellas, sore teeth, thyroid problems, epilepsy/seizures, ear infections, digestive issues, skin or environmental allergies, yeast infections, hearing loss, eyesight loss, and cancer.

What do you do when your dog is acting weird?

If your dog is acting strange or exhibiting any of the signs or symptoms outlined, call your vet to discuss and don’t hesitate to bring him or her in for a check-up, if they persist, Richter says. It’s always better to be safe and have a vet take a look.

Why is my dog acting anxious all of a sudden?

Age-Related Anxiety: As dogs grow older, some develop new fears and confusion due to cognitive dysfunction syndrome (CDS). Medical Issues: Underlying medical issues, ranging from pulled muscles to thyroid conditions, can cause sudden anxiety in dogs.