Why does my dog shake when they go into The Den?

Dogs shaking when they’re excited or happy is actually very normal—and usually a great sign that they’re feeling big emotions in a small body.

When a dog gets excited (like when you walk through the door, grab the leash, or they arrive at daycare), their body releases adrenaline. This burst of energy ramps up their nervous system, and sometimes that energy has to go somewhere. Shaking is one way their body releases it—kind of like how people might bounce their leg, laugh uncontrollably, or even tear up when they’re overwhelmed with joy.

Shake it off

You’ll often see this in small dogs especially. Their bodies are more sensitive to stimulation, so excitement can physically show up faster and more intensely. At Lil Doggie Den, it’s super common to see pups do a full-body wiggle or little tremble right before jumping into playtime with their friends.

Shaking can also be a form of emotional regulation. Dogs don’t have the same outlets we do, so a quick shake can help them reset and bring their excitement levels back down. You might notice a dog shake it off after greeting a new friend or finishing a play session—that’s them calming their system back to neutral.

Of course, context matters. Happy shaking usually comes with loose, wiggly body language, a wagging tail, bright eyes, and playful behavior. If shaking is paired with tucked tails, hiding, whining, or avoidance, it could be a sign of stress or fear instead.

The bottom line: a little shake during happy moments is totally normal. It just means your dog is feeling all the good things—and sometimes, it’s just too much excitement to contain.