Blue Heeler Suddenly Aggressive: Here’s Why + What To Do

When you know your Blue Heeler’s personality to be an affectionate dog with good behavior, it can be quite surprising when they start becoming aggressive.

Sudden aggression is unusual behavior that can include behavior such as growling, snapping, biting, barking, nipping, or barking at strangers or other animals.

So what are the reasons behind a Blue Heeler’s sudden aggression?

In this article, we will dive into the reasons for sudden Blue Heeler aggression, what to do about it and when to seek help.

Why is my Blue Heeler suddenly aggressive?

A Blue Heeler’s sudden aggression is mainly due to illness, fear, injury, resource guarding, punishment, redirected aggression, cognitive dysfunction due to aging, hypothyroidism, or a dental problem. Sudden aggression without provocation is not uncommon however it requires determination of the route cause of the behavior to help your dog.

Why is my Blue Heeler suddenly aggressive