What is the average heart rate range for toy breed dogs?

What is the average heart rate range for toy breed dogs?

• A. 60-180
• B. 30-60
• C. 90-150
• D. 100-200

Answer: (A)

Toy breed dogs have higher heart rates than larger breeds because of their fast metabolism and small heart size, so their normal resting heart rate covers a broad range. The broad range of 60 to 180 beats per minute is consistent with what veterinarians see across all dogs and comfortably includes the higher resting rates observed in toy breeds as well as the lower end when a dog is very relaxed or sleeping. The other options are either too low to cover normal resting toy-dog rates or too narrow or too high to represent typical resting values; they would miss dogs that rest toward the higher end or, in some cases, include values that are not typically considered normal at rest.

Toy breed dogs have higher heart rates than larger breeds because of their fast metabolism and small heart size, so their normal resting heart rate covers a broad range. The broad range of 60 to 180 beats per minute is consistent with what veterinarians see across all dogs and comfortably includes the higher resting rates observed in toy breeds as well as the lower end when a dog is very relaxed or sleeping. The other options are either too low to cover normal resting toy-dog rates or too narrow or too high to represent typical resting values; they would miss dogs that rest toward the higher end or, in some cases, include values that are not typically considered normal at rest.