🫁 Monitoring Sleeping and Resting Respiratory Rates in Dogs and Cats with Heart Disease: A 2025 Vet Guide 🐾

By Dr Duncan Houston, BVSc

Heart disease can be a silent but progressive threat in pets. One of the simplest, most effective ways to detect and manage congestive heart failure (CHF) in dogs and cats is by monitoring their sleeping respiratory rate (SRR). In this guide, I’ll explain how to measure SRR, when to use it, and what it tells us about your pet’s heart health. 🐶🐱🫀

🔍 Why Monitor SRR?

Most pets with CHF due to left-sided heart disease develop fluid in the lungs. This increases their breathing rate — often before you notice symptoms like coughing or lethargy. SRR monitoring allows you to detect changes early and at home. 🏠

Your veterinarian may ask you to track your pet’s SRR in three key situations:

1. 🩺 Preclinical heart disease: Catching CHF before symptoms appear
2. 🔎 Differentiating CHF from other illnesses: Ruling out heart failure when signs are unclear
3. ⚖️ Managing CHF: Monitoring response to medications

🔬 What Is a Normal SRR?

For both dogs and cats:

• ✅ Normal SRR: 10–25 breaths per minute
• ⚠️ Concerning SRR: Over 30 breaths per minute

If SRR exceeds 30 bpm or increases from your pet’s usual rate, this may indicate worsening CHF. Contact your veterinarian promptly. 📞

📏 How to Measure SRR

💤 The best time to count is when your pet is in a deep, undisturbed sleep — not twitching or dreaming.

Step-by-Step:

1. 🛌 Wait until your pet is sleeping calmly in a quiet environment
2. ⏱️ Count each breath (inhalation + exhalation = 1 breath)
3. 📆 Count for 30–60 seconds (use a timer)
4. 📝 Record the rate daily or as instructed

🛠️ Helpful Tools:

• 📱 Apps that let you tap the screen with each breath
• 📋 Pen and paper log or notes app on your phone

📈 Why SRR Matters in CHF Management

When pets are diagnosed with CHF and placed on medications like diuretics (e.g., furosemide), veterinarians often rely on SRR to monitor their progress. If your pet’s SRR remains < 30 bpm, it usually means the meds are working. If SRR increases, it could mean:

• 💧 Fluid is returning to the lungs
• 💊 Medication adjustments are needed

With accurate SRR data, your vet may recommend:

• 🔁 Revisiting the clinic for imaging
• ⬆️ Temporarily increasing diuretics

🧠 Distinguishing CHF from Other Diseases

If your vet suspects CHF but the diagnosis is unclear, SRR can help differentiate:

• 🩺 Normal SRR = CHF unlikely
• ⚠️ Elevated SRR = CHF more likely

This is particularly helpful in dogs with respiratory or systemic illnesses that mimic heart failure symptoms. 🎯

📡 Smart Collars & SRR Monitoring

Modern “health collars” promise to measure respiration, heart rate, and temperature — but how accurate are they for SRR?

💡 Most don’t measure breathing directly. Instead, they assess heart rate variability (HRV), which correlates with respiration in resting dogs.

• 📉 In CHF, HRV often disappears → the collar can’t estimate SRR accurately
• 🛠️ Malfunction or “no data” may signal worsening CHF

While useful for trends, collars should never replace manual SRR counting. ❗

📹 Learn By Watching

Watch real examples of SRR in action:

• 🐕 Canine Sleeping Respiratory Rate
• 🐈 Feline Sleeping Respiratory Rate
• 🐶 Canine Resting Respiratory Rate

These videos help build confidence in your technique. 🎥

📱 Ask A Vet Can Help

Managing heart disease at home is easier with support. The Ask A Vet App helps you:

• 📋 Log SRR readings and share them with your vet
• 📞 Get advice if SRR rises or symptoms change
• 📅 Track medication schedules and vet appointments

Visit AskAVet.com for expert support anytime. 🐾

🧠 Final Thoughts from Dr Duncan Houston

Something as simple as counting your dog or cat’s sleeping breaths can be a powerful tool in monitoring heart disease. It’s easy, it’s free, and it could save your pet’s life. ❤️

If you notice a change in your pet’s breathing or SRR above 30, don’t wait. Contact your vet — or use Ask A Vet — to act fast and keep their heart in balance. 🫀🐶🐱