With the advancements in veterinary cardiology, ECG has become a basic diagnostic aid and its role in primary diagnosis is becoming more and more important. Though there are multiple conventional electrocardiograms available with different specifications and price, use of smart phone based technology in recording ECGs in veterinary patients is a welcomed technology. This device is simple, handy and provides information that helps in assessment of heart rate, rhythm, conduction abnormalities and arrhythmias. In the present study, the smart phone device was used to trace ECG by placing onto the back of an iPhone or any android phone and / or by placing the phone close to the electrodes and recorded a single lead ECG for 30 seconds. Elevated R wave amplitude, deep S wave, deep Q wave, elevated T wave amplitude, electrical alterans, atrial fibrillation, bradycardia, ventricular tachycardia, ventricular premature complex, deep Q and elevated R wave, wide P wave, low voltage QRS complexes, absence of P wave, wide QRS, ST coving, fine atrial fibrillation, bradycardia with low voltage QRS complexes, deep T wave were the significant abnormal tracings recorded using smartphone based ECG device. Hence, it may be concluded that the smartphone base ECG device might be an alternative for conventional ECG with cables to record various abnormalities and cardiac arrhythmias.