ThunderShirt Anxiety & Calming Aid for Dogs, Heather Grey
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Thundershirt uses gentle hugging to calm your dog. With its patented design, Thundershirt’s gentle, constant pressure has a dramatic calming effect for most dogs if they are anxious, fearful or overexcited. Based on surveys completed by over two thousand customers, over 80% of dogs show significant improvement in symptoms when using Thundershirt. Thundershirt is already helping hundreds of thousands of dogs 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 dog 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 jumping, excessive barking, and inappropriate marking.
- Proven effective in over 80% of dogs.
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Item Number56056
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LifestageAdult
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BrandThunderWorks
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Breed SizeLarge Breeds

Safe, Simple Calming Solution
ThunderShirt features a patented design that applies gentle, constant pressure on your dog'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 dogs with separation and crate anxiety, 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 leash pulling, barking, digging and scratching.
Size 'Em Up
ThunderShirt is designed to be easy to put on and easy to adjust for proper fit, even if your dog 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 pup for best results.

XX-Small
For dogs under 7 pounds

X-Small
For dogs between 8-14 pounds

Small
For dogs between 15-25 pounds

Medium
For dogs between 26-40 pounds

Large
For dogs between 41-64 pounds

X-Large
For dogs between 65-110 pounds

XX-Large
For dogs over 110 pounds
Pick Your Style
ThunderShirt is available in a range of style options to match your dog's individual style.

CLASSIC
The ThunderShirt that started it all, with classic styling and a neutral grey color that looks good on any pooch.

POLO
Available in a variety of colors and patterns, featuring soft, stretchy material for more comfort during prolonged use.

SPORT
Made of soft, breathable material that's extra comfortable and highly durable for the most active of dogs.

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 dog, 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
84% Recommend
84% of reviewersrecommend this product
You've Already Reviewed This Item
831 Reviews
Showing 1-10 of 831 Reviews
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Fit is good
By Sarah on Mar 2, 2021
Got this just a week ago to prepare for rainy season here in Florida. My dog has serious storm anxiety, along with fireworks. She will literally shake while cowering in her crate when either happens. I used my husband's shirt to make a make-shift thunder shirt and it did help, so I decided to splurge on the real thing. She doesn't mind me putting it on her at all. Haven't had a chance to see it in action, but hope I can help someone who's worried about sizing like I was. She's a 53 pound plott hound mix, so she's deep chested measuring 30 inches. I bought the large and it fits perfectly.
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ACTUALLY , LEGITIMATELY WORK!!
By TJ22 on Feb 12, 2021
I adopted a (9) month old Rottweiler, Cleo, ~{She is the 3rd Rottie I've owned} ~ and realized after a few months that she was dealing with some pretty significant anxiety. She was unable to self-soothe or calm down on her own. It was causing her to chew everything in her path, destroying not only her toys but furniture, my clothes etc. Desperate to help her, I ordered a Thundershirt and Calming Chews. After she got used to the smell of the T.Shirt, and allowed me to put in on her - she transformed almost immediately. I don't usually leave reviews, but for my big, beautiful girl - this Thundershirt has been a GODSEND! Now, she actually goes and takes it out of her cupboard and brings it I adopted a (9) month old Rottweiler, Cleo, ~{She is the 3rd Rottie I've owned} ~ and realized after a few months that she was dealing with some pretty significant anxiety. She was unable to self-soothe or calm down on her own. It was causing her to chew everything in her path, destroying not only her toys but furniture, my clothes etc. Desperate to help her, I ordered a Thundershirt and Calming Chews. After she got used to the smell of the T.Shirt, and allowed me to put in on her - she transformed almost immediately. I don't usually leave reviews, but for my big, beautiful girl - this Thundershirt has been a GODSEND! Now, she actually goes and takes it out of her cupboard and brings it over to me to put it on. When I remove it at night before bed, she remains calm and sleeps through the night. Because of Thundershirt ~and~ her Calming Treats, I now own a cuddly, calm, intelligent, beautiful Rottie! Thank you so much for designing and developing an anti-anxiety device that actually works!! … more
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This thing is a godsend <3
By Butters on Feb 25, 2021
Our dog, Butters, was really scared of thunderstorms when he was a pup. I bought him a Thundershirt and put it on him the next few stormy days and he never once was afraid again. After that we didn't even need to use the shirt! Fast forward about 10 years, and he's suddenly started having anxiety attacks (due to old age). I bought him another Thundershirt and some chews and it has helped so much with his anxiety. He's been so calm and comfortable - I can't thank you enough!
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Like a charm!
By FrankieHudson2 on Mar 1, 2021
I have two very sweet happy pitbulls who just love having visitors, but to the point where it takes them quite awhile to calm down and enjoy the company. I purchased them both one of these thunder shirts and also gave them some calming treats prior to having guests and it made such a difference. There was zero jumping and they were still their happy lovey selves. I would recommend these for hyper dogs!
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Resting at last!
By Ralph on Mar 4, 2021
This shirt does what it says it will do! We were at our wit's end to calm down our rescue dog from the usual loud noises, etc that sent him shivering. panting, and trying to escape. We were a little dubious at first not thinking that a "shirt" could do the trick. We really didn't want to medicate him. The shirt calmed him down so he could sleep peacefully...and us too! Just follow the instructions.
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Small, Too big?
By Jackie on Feb 18, 2021
I have a mini poodle mixed, ordered a small but looks a bit lose? I put it on the tightest fit but not sure if it’s supposed fit a bit lose or tighter? Wanted to get XS but she’s usually too big for those, she’s around 15lbs... I’m still not sure if the actual shirt works, she went back to her bed when I put it on but I will know for sure when I leave the house. Praying she doesn’t howl anymore .....
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Didn't do a thing
By Rottweiler on Feb 28, 2021
My Rottweiler barks non stop at thunder and fireworks. Everyone told me to try this so I thought anything to try and help her calm down. I wish I would not have ever spent so much money on a t-shirt with velcro that does absolutely nothing for her. It breaks my heart that we both don't get any relief. This did absolutely nothing to calm her down. I am so disappointed.
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Fabulous calming shirt
By Elaine on Feb 15, 2021
While I was off for three months (early COVID) my small dog got very use to me being home. When I went back to work , he started peeing in the house , EVERY DAY. After 5 months of trying all different things to no avail I bought the Thunder shirt. Instantly stopped peeing.OMG. SO HAPPY!!!! IAlso bought one for my larger dog, She attacks the vacuum while I’m using it. Now she just sleeps . Can’t wait to see if it helps her during fireworks.
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Sizing is not consistent with the packaging chart.
By Bett on Feb 9, 2021
Beware of the sizing when ordering. My dog is 62 pounds and long and lean, so I ordered the Large as indicated on the labeling. It is the smallest large I've ever seen. Perhaps it was mis-boxed in a large box. But it still doesn't account for the size change from the last time I bought the same product from the same company. The one they sent is also extremely short; doesn't cover my dog's sparse undercarriage. The previous one had been perfect, but unfortunately had worn out.
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I’m surprised, honestly
By hp123 on Feb 23, 2021
My dog has terrible separation anxiety. I bought cameras so I could talk to him, tried over the counter calming supplements, and nothing really helped him. This of course isn’t a cure all, but it REALLY puts him at ease. I normally use this jacket, and stuffed Kong, and Rescue Remedy. All three together are AMAZING.