How to Scan
Place any smartphone against the animal's chest — no accessories needed. Watch a 30-second demonstration video for dogs, or follow the illustrated steps for each species below.
Video Guide
Watch a quick demonstration of how to record a heart scan with Sonus Health.
Dogs
Find the heartbeat
Use your ear or hand to feel where the heartbeat is strongest.
Place your phone
Part the fur and hold the bottom of your phone (where the microphone is) against the skin.
Cats
Find the heartbeat
Gently feel under the chest where the ribs end, near the sternum. This is where the heartbeat is strongest in cats.
Place your phone
Hold the bottom of your phone gently against the chest. Don't press too hard — firm pressure can distort the reading.
If your cat is purring, try showing them running water or offering a treat to pause the purring.
Horses
Find the landmark
On the left side, find the area just above the elbow and behind the triceps muscle. This is where the heartbeat is strongest.
Place your phone
Slide the bottom of your phone underneath the triceps muscle, against the chest wall. Don't place it on top of the muscle — it will muffle the sound.
General Tips
Record for at least 20 seconds
Longer recordings give our AI more data to work with for accurate analysis.
Find a quiet environment
Background noise can interfere with the recording. Turn off TVs, music, and other sources of sound.
Use the bottom of your phone
The microphone is located at the bottom of most smartphones. Position this part against the chest.
Keep the animal calm
A relaxed animal produces cleaner heart sounds. Let them settle before recording.