Take the “PET” Out Of Petrified™

ThunderShirt is a proven solution for dog and cat anxiety. With over an 80% success rate, Thundershirt’s gentle, constant pressure can eliminate fear of thunder, fireworks, separation anxiety, car anxiety, vet visits and more

Our mission is to help relieve the suffering of the millions of dogs and cats dealing with anxiety and fear issues. In doing so, we hope to strengthen the bonds between pets and their families, reduce the number of pets abandoned, and help shelters and rescue groups place dogs and cats in need of families.

We are not about innovating for innovations sake. We are making affordable, effective, easy-to-use solutions for real problems faced by real pet families. We don’t want to be offering the same old products offered by literally hundreds of companies – just another dog bowl, just another leash, just another dog bed in a different color or material. We strive to achieve innovations that create functional, real solutions for common pet problems. We are incredibly proud of our Calming and Walking innovations.

ThunderWorks’ founder, Phil Blizzard, had a dog named Dosi who was extremely frightened by thunderstorms and fireworks. Wanting to comfort Dosi (and get more sleep), Phil did what most families do and consulted with veterinarians and dog trainers. Unfortunately, no one had a good solution. So, for many years Dosi (and her family) had to suffer though thunderstorms and Fourth of July fireworks.

One day, a friend of the family recommended trying a snug wrap, like swaddling an infant. It sounded far-fetched, but nothing else had worked and it certainly couldn’t hurt to try. During one bad storm, they wrestled Dosi into an old t-shirt and used packing tape to create mild pressure. They were amazed – Dosi calmed almost instantly and laid down for the duration of the storm! ThunderShirt evolved from there, and has helped calm millions of dogs and cats around the world.


Thunderleash is an easy no-pull solution, that works with any collar.

  • Applies safe pressure around your dog’s chest.
  • Goes on in seconds and no training required. No complicated harnesses.
  • Recommended by positive-based trainers across the country.
  • Fits all breeds and sizes.
  • Padded handle means extra comfort for your hand.
  • Over an 80% success rate.