Our collar is the first dog tracker – Jagger & Lewis


At Jagger & Lewis, we’re dog owners ourselves, and more than just owners, we’re true dog lovers. Our dogs are all like our babies and nobody knows them better than we do.

But, as much as we’d like to, we can’t always be with them. Wouldn't it be great to know how everything is going when they are home alone and to make sure they're ok?


The Jagger & Lewis smart dog collar device tracks your dog’s behavior and activity, and shares updates with you directly through the companion app. Unlike other smart devices for dogs, the device attaches to your dog’s collar and transforms it into a smart collar.


Ensure sleep


Reduce stress,
his agitation


Prevent pain


Satisfy hunger,
his thirst


Guarantee an improved health





When you use it for the first time and after pairing the device with the smartphone app - available on iOS and Android - we will ask you a few of questions by the app to better know your dog - such as their age, type, general weight, or normal food intake.

The datas on these behaviors and their environment are then sent into Jagger & Lewis’ welfare algorithm that measures their current welfare value depending hunger, thirst, sleep, disease, pain, specific activities and stress levels against their usual behavior.

An evaluation of their well-being based on the six key aspects of their day


We analyze the normality of their meals, we detect unexpected meals (theft), unusual eating behaviors and changes in their behaviors that can be early signs of disease (anorexia, …).


We detect any slight changes in drinking behavior, that can be early signs of diseases (renal diseases, diabetes, ...).


We verify your dog is getting enough rest and sleep, we analyze the quality of their sleep, we check their night activities to detect symptoms of diseases such as hyperactivity, cognition troubles on senior dogs, acute illness, …


We identify eating problems at night, we detect if your dog is anxious when he/she is alone, we detect peak of stress to allow you to closely monitor your dog’s anxiety level.


We verify that the level of activity of your dog is appropriate to his/her age and we check its evolution to help detect anomalies such as arthrosis. We detect if walking and playing habits are in a normal range for a dog like yours.


We can detect if your dog is scratching of licking himself/herself too much since it may be a result of dermatological problems. We detect if they are crying, gasping, shaking and analyze if they are in pain. We alert you if we detect any change compared to their normal behaviors.

Is my dog doing allright? How can I help?

Our device goes much further than other devices on the market. We carefully evaluate your dog's behavior and are able to detect major behaviors troubles that highly impact their welfare and their relation with their family like trouble about Hyper-attachment or Anxiety.



If your dog is too much attached to yourself.


If your dog suffers from hyperactivity.



If your dog is aggressive.



If your dog is anxious.

We as dog owners want to prevent our dog from feeling distressed and see whether any changes we implement are having an impact on their welfare. Our device measures this improvement in behavior.

For example, If we found out your dog was barking too much when you were not at home for example, we will offer advice on changes you could make. Our collar will be able to measure how their behavior changes day to day and when improvements happen, so you (and your dog) can relax!


You know your dog best, so we’ll also ask you about their general characteristics - are they calm or active? Do you leave them with a bowl of water at night? Where does your dog tend to sleep, and for how long? Do they have any illnesses? Where do they live, and do other animals live with them? Once the app has this data, your dog behavior and well-being is compared with similar dogs in our database. This allows you spot anything out of the ordinary and react immediately.

For example, if your dog barks all day when you’re not home, every day you’ll be able to track how our suggestions have impacted their behavior change. Learning that your dog barks less than usual or not at all will help you understand them better, improve their welfare, your well-being, and certainly your neighbor’s, too!



Unlike other smart collars for dogs, you simply clip the small device onto the collar you already use. It’s small enough to not cause any discomfort to your dog, but smart enough to keep you updated at all times. We know that many owners have a special collar for their dog already, and so this way they get to keep wearing their favorite collar!

With every movement, our sensors record more than 50 pieces of data per second that are then processed through the onboard neural network.

The data is sent by wifi to our servers and analyzed depending on your type of dog. We’ve built a database over the past year to be able to study more than 300 dog types.

The datas are then introduced into our welfare algorithm which has been created by veterinarians. Your dog’s profile and datas are compared against his usual behavior and with similar dogs to evaluate their daily behavior and their well-being value.

Through the app, you are provided with advice on how to improve their welfare.

resistant et étanche

Robust and waterproof - IP 67

Light: 30 grs

Neural Onboard

Designed by our veterinarians and our community


Battery life: between 3 - 5 days


Suited to all dogs (> 4 lbs)


We know that we can’t always be with our dog. Jagger & Lewis was designed with this in mind - it’s often when they aren’t with us that we worry most about our dogs. Whether you’re at work, on holiday or your dog is with a dog sitter, we’ve got it covered!

Once the smart collar device is worn by your dog and connected to our smartphone app, there are three modes to choose from: away mode, guest mode and challenges.


"My dog Akina has been suffering from hyper-attachment and showing destructive behavior, and even though we doing our best to improve it, I never truly know how she feels when I'm not home. This device not only tracks progress in your dog's behavior, it can put words to their feelings. Jagger & Lewis is a wonderful and clever invention.
Even though I know my dog inside out, we don’t speak the same language as our four-legged companions, and so I welcome a device that could allow me to better understand my dog day after day."

Akina & Audrey

from the Youtube channel ‘Akina et Audrey’
“Being able to measure your dog's activity with data will support a more accurate diagnosis.”

Doctor Joelle Finez

Graduated and dedicated in animal behavior
“What this provides is a really precise measurement which, based on your dog's behavior, gives tangible and reliable figures.”

Doctor Arnaud Muller

Graduated from The European College of Veterinary Dermatology
“I am eagerly awaiting for the Smart Dog Collar’s launch, because even if my teckel Sam is only 2, I can recall a lot of times when I could have used precise information to be able to act, or simply to be serene. I think we, as dog owners, lack a precise tool to understand our dogs and to have clear information about their well-being.
I know that the information the collar will bring will be reliable because many tests have been carried out and the results have been validated by 2 vets specialized in canine behavior.
Finally, what really pleases me is that I’ve had the chance to handle the application: I am not a technology expert, and I can assure you that it all felt really simple to use and intuitive.”

Sam & Marie-Sophie

Happy owner of Sam


pre-order now and be the first to receive it!


No. The Jagger & Lewis collar comes exclusively without a monthly fee.

Yes of course, we offer a 2 year product warranty.

As you can see on our plan, the collar is scheduled for delivery in June 2017.

Yes, we ship anywhere in the world.

For the kickstarter campaign, the shipping costs for one collar will be: $10 for France, $15 for the rest of Europe, $25 for the US and $28 for the rest of the world.

When shipping outside the European Union, the receiver pays the import fee.

You just have to wrap an elastic bands around the monitor base. You can do it on every types of collar (except shoke collar and prong collar). After you just have to attach the monitor to the base, it take less than ten seconds.

Our collar is designed to be attached on a dog collar. Wearing the collar on a harness may reduce the behavior detection. If you use a harness to take your dog out for walks, we recommend that you keep the monitor on a collar that your dog can wear 24/7 and wear the harness on top of that.

The app will be free and available on Ios and Android. Simply download it and connect it to your collar.

"iOS : Mobile devices with Bluetooth 4.0 running iOS 8 and above Examples: iPhone 4s/5/5c/5s/6/6 Plus/6s/6s Plus/SE/7, iPod Touch 5, iPad 3/4/Air/Air2/Mini

Android : Mobile devices with Bluetooth 4.0 running Android 5 and above Examples: Samsung Galaxy S 4/5/6/7, Samsung Note 3/4, Google Nexus 4/5/6"

The collar will send a signal to your app when you turn it on. All you will have to do is follow the instructions to synchronize your collar with your user profile.

It's very easy to connect the collar to the application, it takes less than 10 minutes to connect the collar and to answer several questions to know more about your dog, his activity, his habits and his environment.

Your application can be connected to 3 collar for your 3 dogs.

Your collar can be connected to several smartphones.
The entire family can be envolved in your dog's health.

To charge your collar, you just have to connect the monitor to any computer’s USB 1.x/2.x port or a Class 2/Limited Power Supply with a USB output. If your battery is empty, it takes about 90 minutes to indicate that the battery is now completely charged. The collar was designed to function anywhere in the world. You will receive a USB cable to charge it.

Beetwen 3 and 5 days. We have a led indicator, when it's red you have to charge your collar .

We proceed following the scientific definition of welfare. It is articulated around 5 axis of freedom that are:

  1. Freedom from Hunger and Thirst – by ready access to fresh water and a diet to maintain full health and vigour.
  2. Freedom from Discomfort – by providing an appropriate environment including shelter and a comfortable resting area.
  3. Freedom from Pain, Injury or Disease – by prevention or rapid diagnosis and treatment.
  4. Freedom to Express Normal Behaviour – by providing sufficient space, proper facilities and company of the animal’s own kind.
  5. Freedom from Fear and Distress – by ensuring conditions and treatment which avoid mental suffering.

Sure ! Osteoarthritis decreases dogs activity. During the treatment, we can measure the evolution of the activity and pain, and give an objective data to evaluate the evolution of the disease.

Sure ! Dermatites induces scratching and/or licking which are two behaviors we are able to detect. So we can warn owners when these behaviors increase and we can give an objective evaluation of improvement after treatment by checking specifically the decrease of thise behaviors.

Sure ! After a surgery or a treatment, we can follow the evolution of specific behaviors until getting back to the previous and normal habits of the dog.

We have a precise evaluation of  your dog's requirements according to last scientific consensus (NRC06) and we are able to give you the precise amount of kibbles to give him every day.

Yes ! As we calculate calorie requirements,  determine an ideal weight, we can help you to adjust your dog's diet and activity and help him with maintaining an accurate weight.

Yes we constantly compare the dog to his usual and past behaviors so we can detect really early subtle changes that trigger warnings. The owner can assess whether or not this alert is well-founded or not and we learn from each other ! Every day your collar will be a better sentinel watching your dog's health.

Sure ! We are the only ones, as far as we know today, able to check quality of sleep and including in our five freedoms matrix of welfare. In several months we will even be able to detect when the dog is dreaming which will allow us to be even more accurate in the quality of sleep.In some time we will even be able to detect when the dog is dreaming which will allow us to be even more accurate in the quality of sleep.

Sure ! We detect behaviors in absence ant not only a level of activity but precise behaviors such as scratching, whining, panting, pacing… so we can monitor very percisely separation anxiety and also the improvement when the dog is treated.

When you want to share your data with your vet, is it possible simply to show him the application, it is also possible to extract a pdf file to send specific data to your vet.

Yes our collar has the IP67 certification. It can be submerged up to 1 meter for up to 30 minutes.

60mm x30mm x 28mm pour 35 grammes / 2,3 inch  x 1,18 inch x 1,1 inch for 1,23 ounce

We analyse the 9 dimensions of the spatial position with a Gyroscope, orientation of the device with a magnetometer,  acceleration with an Accelerometer. Our device integrated also a microphone, a detector of light to know for example if your dog is outside or inside and a temperature sensor.

We love dogs, so the collar was designed with our furry friends’ well-being in mind. We have made sure that everything is perfectly safe for them. We use less emission technologies : the bluetooth low energy 4.0 and the Wifi 2.4 GHz.  And we have the certification FCC / CE and WiSUN pending.

We test the collar with 4.4 lbs dogs, but never on smaler dogs like 3 lbs Chihuahuas. we think that for the moment it could be unconfortable for a very small dog to wear the collar.

No, sadly it's not possible. 

We have a fifty ambassadors community. Each ambassador help us to  test our solution with their dogs.

The collar is a French product. We are based in the beautiful city of Lille, in the north of France.

Based on our previous experience with similar components and materials, our current assessment is the following: Operating temperature: -4°F to 122°F (-20°C to 50°C). Storage temperature: -22°F to 140°F (-30°C to 60°C)"

Our solution doesn't include a tracker to follow the localisation of your dog when he escapes. Our product focus on health, activity, sleep and behavior.

If we reach the goal of 700K$ preorders amount on kickstarter, we will include this service in our product.

The datas are introduced into our welfare algorithm which has been created by veterinarians. Your dog's profile and datas are compared against his usual behavior and with similar dogs to evaluate their daily behavior their well-being value.

Through the app, there are advices provided on how to improve their welfare.

In case there is no wifi around, we stock the data of your dog on the collar. We will send the data as soon as we detect a wifi and you will get on the information on our smartphone about this period of time.

We know that we can't always be with our dog. Jagger & Lewis was designed with this in mind - it's often when they aren't with us that we worry most about our dogs. Whether you're at work, on holiday or your dog is with a dog sitter, we've got it covered!

Once the smart collar device is worn by your dog and connected to our smartphone app, there is a special modes to choose: the guest mode for when your dog is in the kennel or with a dog sitter, you are able to track their behavior and activity is compared to how your dog would usually be when with you.

To send the data, the collar need to be connected to the wifi.

For vets, our goal is to provide them with precise and objective datas related to your dog's behavior. This is done in order to make the detection of disease, the diagnosis, and recovery tracking all as painless as possible.