Why does Thundershirt work?
With its patent-pending design, the new Thundershirt for Cats applies gentle, constant
pressure to the torso and this pressure has a dramatic calming effect for cats if
they are anxious or fearful. Thundershirt has already helped many tens of thousands
of dogs around the world, and is recommended by thousands of veterinarians and dog
trainers. And the early results for cats look just as impressive. Cat owners and
veterinarians are amazed by the positive impact a Thundershirt can have with cats.
As for WHY
Thundershirt’s gentle pressure works to calm a dogs
and cats, anxiety experts believe that pressure has a calming effect on the nervous
system and may release calming hormones like endorphins or ocytocins. Using pressure
to relieve anxiety has been a common practice for years.
- Parents use swaddling to calm an inconsolable newborn infant.
- People with autism use pressure to relieve their persistent anxiety.
- Children with certain behavioral problems use pressure shirts and weighted vests
to relax and focus.
- TTouch animal trainers use pressure to address a wide variety of anxieties.
- Veterinarians use pressure to relax cattle when they are administering vaccinations.
Until Thundershirt, there just hasn’t been a well-designed, inexpensive solution
commonly used for cat anxiety.
Why doesn’t my vet know about this remedy for anxiety and fear issues?
Good question! The use of pressure to relieve feline anxiety is a relatively new
concept and not well known in general. But we are working hard to change that! If
you would like us to speak with your veterinarian, please contact us.
What training is required for using Thundershirt for anxiety and fear issues?
For most cases… none! Just put Thundershirt onto your cat and you will likely see
improvement in the symptoms. However, cats are very sensitive to having anything
put onto their bodies and the “Freeze & Flop” is a common initial response.
When you first put on Thundershirt, if your appears to “freeze up” or refuse to
move, please see the “Freeze & Flop” section in this post. For many issues, like
travel anxiety or hating vet visits, a Thundershirt may be all you need for success
with your cat. For some more serious anxiety cases, such as severe separation anxiety,
you should consult a good trainer for how to integrate Thundershirt into a training
My cat freezes up, won’t move or falls over in her Thundershirt. What should
When first wearing a Thundershirt, some cats will behave as if they are immobilized
and may even “fall over”. Don’t worry! The Thundershirt is not causing discomfort;
they just need time to adjust to the new sensations. Cats are amazingly sensitive
to touch and sometimes require a little more adjustment time in the beginning. But
this also means that many are even more responsive than dogs to the gentle, calming
pressure of a Thundershirt!
If your cat initially appears uncomfortable or does the “Freeze & Flop”, please
do the following. Put the Thundershirt onto your cat with very light pressure and
for 5 to 10 minutes, try to engage your cat in play with a favorite toy or a laser
pointer. If your cat continues to look uncomfortable or still refuses to move freely,
remove the Thundershirt for a short period and then repeat the process two to three
times. If still no success, try repeating the process with longer breaks in between
(e.g. wait a day and then retry).
How do I exchange my Thundershirt for a different size?
If you purchased your Thundershirt from another retailer:
You will need to exchange the Thundershirt at the place of purchase, as they received
your payment. You may need contact the place of purchase directly to find out their
If you purchased your Thundershirt directly from Thunderdogs Malaysia:
If you believe that you may need a different size Thundershirt for your cat, we
will be happy to exchange it. Please contact us at firstname.lastname@example.org to obtain the return address and send it back with the original box with a note stating the new size you’d like to have. Please note that an additional charge of RM10 will be applied for the additional postage and packaging.
Can I wash and dry Thundershirt? Remove hair from fastener hooks?
Thundershirt is made with durable, washable fabric. When necessary, Thundershirt
may be washed in a regular cycle using regular laundry detergent and cold water.
Hang to dry.
If necessary, to remove cat hair from your Thundershirt’s fastener hooks, we recommend
using a standard “slicker” brush (Available at most any pet store). A couple of strokes and the fastener hooks will be nearly completely
How long can I leave a Thundershirt on my cat
Thundershirt is designed to be safe to leave on your cat for extended periods of
time when appropriate for the situation or issue that you are addressing.
Thundershirt is made out of light-weight, breathable fabric, so over-heating is
very rarely an issue. When properly sized and properly put on with a comfortably
snug fit, your cat should be very comfortable for extended periods.
If you will be allowing your cat to wear a Thundershirt for extended periods over
two hours at a time, during the initial periods, we do recommend removing
the Thundershirt frequently to check for any signs of irritation points
Irritation points are very rare, but best to be cautious
Is it safe to leave my cat unsupervised while wearing her Thundershirt?
It is typically safe to leave a cat unsupervised while wearing a Thundershirt.
HOWEVER…before leaving your cat unsupervised for any extended periods longer than
one hour, we strongly recommend the following:
- Make sure that your cat is comfortable and moving freely.
- Make sure that your cat is using the litter box without issues.
- Make sure that your cat is not tending to slide her front paws into the neck hole
and possibly getting stuck.
We do NOT recommend having an outdoor cat wear a Thundershirt outdoors to avoid
reducing her ability to escape from any potential predators and to prevent her from getting caught in trees etc.
How do I put Thundershirt onto my cat
We designed Thundershirt to be very easy to put on your cat, even if she is already
in a state of anxiety.
What size is right for my cat?
||9” up to 13”
||13” up to 17”
||17” up to 24”
||> 13 lbs.
Measure “Chest Size” as illustrated by red arrow below
Thundershirt comes in three different sizes… Small, Medium and Large. See the table
to find the right size for your cat. Like people, cats come in many different shapes
and sizes, so if your cat has unusual proportions, you may need to go up or down
a size versus the “standard” measurements. But the Thundershirt is designed to be
very adjustable to accommodate different cat shapes and still be easy to put on.
Is overheating a concern when using a Thundershirt?
Except in extreme conditions (e.g. 90 degrees Fahrenheit in the sun), overheating
is not typically a concern when using a Thundershirt. Thundershirt is constructed
of a lightweight, breathable fabric. But if you feel that overheating might be a
problem for your particular circumstance, please monitor your cat for any signs
of overheating such as heavy panting or tongue hanging out of the mouth. Remove
the Thundershirt if you see any signs of overheating