A rabbit’s heart rate should be around 120 and 150 beats a minute. The rabbit needs a lot of oxygen to get around its body so that it can hop around all day. That said, the rabbit should be taking between thirty and sixty breaths per minute. This is a resting heart rate, but other sources say the resting heart beat should be between 180 beats per minute and 350 beats per minute.
Regardless of this, it is always best to ask a vet what their recommended lowest and highest beats per minute are for your rabbit. A rabbit’s age, weight, height, and even how active it is can all affect its heart rate, like a human’s heart rate is affected by these things.