Millions of Dogs Helped

ThunderShirt is the original, vet recommended, natural calming solution that helps reduce anxiety in dogs in a drug-free way. Like swaddling an infant, our dog anxiety vest's patented design applies gentle, constant pressure to calm all types of anxiety, fear, and over-excitement issues in dogs.

The ThunderShirt is proven to be over 80% effective in reducing anxiety for fireworks, thunderstorms, separation anxiety, travel, vet visits, problem barking and more. Treat anxiety, fear, and over-excitement in style! You’ll love the ThunderShirt’s calming effect on your dog.

• Over 80% effective
• Veterinarian recommended
• No training required
• Money-back guarantee

What is the Difference Between the Different Types of ThunderShirts?

While we have several different styles and colors of ThunderShirts, they all work exactly the same!  Each style of ThunderShirt is lightweight, machine-washable, and breathable, and they all help your dog to feel calmer during fireworks, thunderstorms, travel, vet visits, and more!  They are all equally as effective, so you cannot go wrong with your choice!     

Please see our  for additional information on how to use the Heather Gray, or Sport Styles.

If you purchased one of our Polo styles, please see 

But I'm looking for a Thunder Jacket...

Our ThunderShirts have frequently been referred to as Thunder Jackets, Thunder Vests, and Thunder Coats – if that is what you are looking for, you are in the right place! From Chihuahuas to Great Danes, millions of dogs have already benefited from the calming effects of a ThunderShirt. Yours could be next – we can’t wait for you to be part of the ThunderShirt family!