What is the typical respiratory rate range for mice?

• A. 60-220 rpm
• B. 70-120 rpm
• C. 40-80 rpm
• D. 10-50 rpm

Answer: (A)

The main idea here is how fast mice breathe because of their small size and high metabolism. Mice have a very rapid respiratory rate that can vary a lot depending on whether they’re calm, stressed, active, or under different conditions. A typical resting range for healthy mice is broad, roughly 60 to 220 breaths per minute. This wide window reflects normal physiological variability, while rates outside this span often signal something is off, like pain, respiratory illness, or effects of anesthesia or environmental stress. When you measure, observe the chest or flank movements for a short period and multiply to get breaths per minute, keeping in mind that activity level and temperature can push the rate up or down within this range.