Veterinary electrocardiograph (ECG, EKG) machine is a specialized medical device used for the diagnosis and treatment of animals. Similar to the human electrocardiogram machine, the veterinary ECG machine receives the electrical activity of the animal's heart through electrodes and converts the electrical signals into waveform outputs on the device screen. This assists veterinarians in assessing the cardiac health of animals and making treatment and medication adjustments.

The usage of a veterinary ECG machine is similar to that of a human ECG machine. When conducting an animal electrocardiogram test, it is necessary to first shave or trim the fur from the animal's body part and attach the electrodes to the area of interest.