why do dogs shake their body

Dogs shake their bodies for several reasons, including to dry themselves off when wet, to release stress, fear, or anxiety, to warm up when cold, and as a response to excitement. Shaking is an instinctive and efficient way for dogs to remove water from their fur, as shaking off water can remove up to 70% of it in just a few seconds. They also shake to calm down after stressful or overstimulating events, which helps them relieve tension. Additionally, shaking can occur due to fear or anxiety, often accompanied by other signs like lip licking and pinned ears. Dogs may also shake when they are cold as a natural way to generate heat by muscle contractions. Sometimes shaking happens when dogs are excited, such as when they see their favorite person or anticipate playtime. While shaking is often normal, it can occasionally signal pain or illness, in which case veterinary advice is recommended.