ThunderShirt Anxiety & Calming Aid for Cats, Heather Grey
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Thundershirt uses gentle hugging to calm your cat. With its patented design, Thundershirt’s gentle, constant pressure has a dramatic calming effect for most cats if they are anxious, fearful or overexcited. Based on surveys completed by over two thousand customers, over 80% of cats show significant improvement in symptoms when using Thundershirt. Thundershirt is already helping hundreds of thousands of cats around the world and is recommended by thousands of veterinarians and trainers. Thundershirt helps keep animals calm so they are more comfortable in situations that were once frightening.
Key Benefits- Patented design applies gentle, constant pressure to calm anxiety, fear, and over-excitement. This gentle hugging produces a dramatic calming effect.
- Calms your cat during fireworks, thunder, separation, travel, vet visits, grooming, and much more with no training and no medication.
- Comfortable and easy on/off. Made of durable, breathable, soft fabric that is washable.
- Recommended by trainers and veterinarians to relieve stress-related behaviors such as scratching, excessive meowing, and inappropriate marking.
- Proven effective in over 80% of cats.
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Item Number56070
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LifestageAdult
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BrandThunderWorks
Size | Pet Weight |
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Small | up to 9 lbs |
Medium | 9 to 13 lbs |
Large | 14 lbs and up |

Safe, Simple Calming Solution
ThunderShirt features a patented design that applies gentle, constant pressure on your cat's torso. This helps calm him during stressful situations, similar to the way parents swaddle infants to make them feel secure. ThunderShirt helps million's of pets, with a better than 80% success rate.


Problem Solved
ThunderShirt helps reduce anxiety caused by loud noises like fireworks or—as the name implies—thunder. But that's not all. This versatile solution can help cats with separation and those who get nervous during car or air travel, vet or grooming visits, or when guests visit the house. It can even curb unwanted behaviors like meowing, marking and scratching.
Size 'Em Up
ThunderShirt is designed to be easy to put on and easy to adjust for proper fit, even if your cat is already in a state of anxiety. So it only takes a few seconds to make him feel more safe and secure. Be sure to pick the right size for your kitty for best results.

Small
For cats under 9 pounds

Medium
For cats between 9-13 pounds

Large
For cats over 13 pounds

Enhance the Calm
Every ThunderShirt features a ThunderSpray patch, providing the perfect application surface for ThunderSpray—a calming solution that mimics a mother's natural pheromones and provides soothing fragrances of lavender and chamomile. When used in conjunction with ThunderShirt, this spray provides enhanced anxiety relief.
About ThunderWorks
ThunderWorks was founded by a doggy daddy whose panicky pup couldn't stand thunderstorms or fireworks. When all the vet had to offer were risky medications, Founder Phil Blizzard fashioned a people shirt to wrap around his cat, and ThunderShirt was born. Today, ThunderWorks is dedicated to providing simple, effective solutions with a range of products designed for the most common pet problems.

Customer Reviews
79% Recommend
79% of reviewersrecommend this product
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150 Reviews
Showing 1-10 of 150 Reviews
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2 different cats
By SunfyresMom on Mar 2, 2021
So I wish I got this 2 years ago my carpet by my bedroom door might have been saved. My girl is super anxious when she can't see people. Cries, rips at the carpet and tears ar the frame. Even anxiety meds didn't really help. This has her chill out at night to the point she can sleep in the room with out making chaos or even sleep by herself in the living room. And if both my partner and I aren't in the same room with her no howls or crying. She's her sweet zooming self with out it on and a bit calmer less anxious sweetie with it on.
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Beware sizing
By kimscats on Feb 17, 2021 Top 1000 Contributor
Followed instructions for sizing and read all reviews, went with Large as my cat is over 13 lbs. Shirt is way too big for her and does not provide compression. Due to covid concerns cannot return so out $39.95 Beware the large is very large and is way too long and wide for my cat. Can't tell if it's helping as the item is clearly too large for her.
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Surprisingly works better than anything the vet prescribed!
By Danika on Jan 2, 2021
Needed to try something new since my cat was having a hard time taking the gabapentin prescribed by the vet, and car rides were terrible. I got the thundershirt combined with the calming pheromone spray and they worked wonders! The combination of the two kept my cat much calmer than the gabapentin ever did, and though there was still some meowing, our car ride wasn't nearly as bad as it has been without the two. My cat definitely is part of the group that freezes and flops, which is quite hilarious, but also ended up helping during the car ride because I could just keep her in my lap!
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Anxiety must
By Ozzie on Feb 10, 2021
This thunder shirt for cat anxiety was a smart idea whoever came up with it I applaud them. The directions are self-explanatory it’s easy to get on my cat well-made material is great.my cat seems very Comfortable with it on. My cat has Anxieties and this calmed him down
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My cat hated it
By Litterbox on Feb 16, 2021
I put it on my cat and she flopped onto her side. I kept standing her back up and she kept flopping over. She wouldn’t walk. She just kept falling over. It was very comical, but I guess she’s one of those cats that hates wearing sweaters.
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Works Wonders
By ThunderShirt on Feb 3, 2021
Got this for my one year old cat who always seemed to be crazy and it turns out she was just anxious. After putting on her thunder shirt she is super calm and even sleeps through the night! Can’t recommend enough for your crazy little ones.
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hard to put on
By Patrick on Jan 8, 2021
I think this would be great for dogs or if you have a very docile cat. It has so much Velcro that I couldn’t get my cat to stay still long enough to fasten all the Velcro components. It seems to be good quality but way too much Velcro for my cat. Chewy customer service is great and they allowed me to donate this to a shelter. Thanks Chewy!
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NOT HAPPENING
By josie on Nov 28, 2020
Tried it on both of my cats and they went ballistic. Neither one would calm down enough to keep it on. It made them crazy and normally they are very calm affectionate pets. They tried frantically to get it off. One cat is one year old and the other cat is four years old. Maybe if you have a cat that does not mind wearing a costume or being dressed up by a child it would be okay.
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This made the biggest difference for my Himi
By panda on Nov 14, 2020
OMG. I bought this without any true expectations. My feline baby, Panda, has always been anxious. She gets Gabapentin for stressful events, but I felt she needed something for at home use as well. We recently moved into a house with a few other cats due to financial reasons and it’s caused a great deal of stress for her. Maybe 30 minutes in to her wearing this jacket she is noticeably more calm. She hasn’t cuddled me in weeks since we moved and now she is content to do so even when other kitties are in the room. BUY THIS JACKET.
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Anxiety still exists
By Lubor on Dec 30, 2020
I got 2 of these for my anxious cats but it doesn't seem to make any difference.I also paired with the pheromone infused cat collar. They don't mind wearing the Thundershirt but it really made no difference in their behavior.