Question

What heart rate is normal in a resting, healthy infant?

Answer 1

In adult normal human the heart rate at resting is 72 per min.
In infant it is higher than adult.

Explanation:

Newborns 0 to 1 month old: 70 to 190 beats per minute. Infants 1 to 11 months old: 80 to 160 beats per minute. Children 1 to 2 years old: 80 to 130 beats per minute.
This is related with activity of the baby also. Hyperactive babies have higher heart rate. During sleep it is less.