Heavy Panting in Senior Dogs:Causes of Why Do Older Dogs Pant So Much?
Okay, here's my blog post about why older dogs pant so much, written from a personal experience perspective, using simple language and basic HTML formatting:

So, my old boy, Buster, a golden retriever mix, has been panting like crazy lately. It used to be just after walks, which made sense. But now? He's huffing and puffing just lying on the rug. Got me worried, you know?
First thing I did was rule out the obvious. Is it hot? Nope, the AC is blasting. Did he just exercise? Nope, he's been snoozing for hours. Okay, something's up.
My Investigation Process:
- Checked his gums. I'd read that pale gums can mean heart problems. They looked...okay, maybe a little lighter than usual? Hard to tell.
- Took his temperature. Figured maybe he had a fever. Used a regular human thermometer (wrapped in a plastic baggie, of course!). Normal. Phew.
- Watched him closely. Was he eating and drinking normally? Yep. Pooping okay? Yep. Seemed himself, just...panty.
After a couple of days of this, and my worrying escalating, I called the vet. No point in guessing, right?
The vet asked a ton of questions, just like I did, she check all same things, but some additional check:
- How long has it been going on?
- Any other symptoms? Coughing? Weakness?
- Is he on any medications?
Then she said the magic words: "Let's bring him in for a checkup." So we went.
The exam include, vet listen to Buster's heart and lungs. She felt his belly. She looked in his eyes and mouth. And then she recommended some blood work and X-rays.
Turns out, Buster has a bit of arthritis, which can cause pain and panting. And, his heart is a little enlarged, which is also pretty common in older dogs. It's not super serious yet, but it's good we caught it.
The vet gave us some pain meds for the arthritis and suggested we start him on a low-sodium diet for his heart. She also emphasized keeping him at a healthy weight and avoiding strenuous exercise.

It's only been a week, but Buster is already panting less. He seems more comfortable, which makes me feel a whole lot better.
The pant reduce significant!
Moral of the story? If your old dog is panting a lot, and it's not obviously related to heat or exercise, don't just ignore it. Call your vet! It could be nothing, but it could be something that needs attention. Better safe than sorry, especially with our furry best friends.