How do you calculate a chihuahua heartrate?

To calculate a Chihuahua's heart rate, place your hand on the dog's chest or use a stethoscope to listen for the heartbeat. Count the number of beats for 15 seconds and then multiply that number by 4 to get the beats per minute (BPM). Typically, a Chihuahua's normal heart rate ranges from 120 to 160 BPM when at rest. Always consult a veterinarian if you have concerns about your pet's heart rate.