Your Vet's Secret Wish
I'm going to tell you something most vets won't say out loud: the most helpful clients are the ones who track things. Not the ones with the most expensive tests or the fanciest food. The ones who walk into my exam room and can tell me exactly when a symptom started, how it's changed, and what else was happening at the time. Those clients make my job dramatically easier and their dogs get dramatically better care.
A dog health journal doesn't need to be elaborate. It needs to be consistent. Here's what to track and why each item matters.
The Weekly Basics (Takes Two Minutes)
Weight
Monthly weigh ins are the minimum. Weekly is better if you have a way to do it consistently. For small dogs, step on a bathroom scale holding your dog, then step on alone, and subtract. For larger dogs, many pet stores and vet offices have walk on scales you can use for free.
Why it matters: Weight loss or gain of more than 5% over a month is clinically significant. Gradual changes are nearly impossible to detect by eye when you see your dog every day. The scale catches what your eyes miss.
Appetite
Note whether your dog ate all their food, some, or none. Note if they seemed enthusiastic or reluctant. Note any days where they vomited after eating or seemed nauseous.
Why it matters: Appetite patterns give me a timeline. "She's been eating about 75% of her food for the last three weeks" is enormously more useful than "she's not eating great lately."
Water Intake
You don't need to measure daily, but note any obvious changes. Is the bowl emptying faster? Is the dog asking for more? A weekly general assessment ("normal" or "increased" or "decreased") is sufficient.
Why it matters: Changes in water intake are early indicators of kidney disease, diabetes, and Cushing's disease. Catching the trend early leads to earlier diagnosis.
Energy and Mobility
A simple scale: 1 (very low energy, reluctant to move), 2 (less active than usual), 3 (normal), 4 (above average energy), 5 (unusually hyper). Note any specific observations like morning stiffness, difficulty with stairs, or reduced play interest.
Why it matters: Energy trends reveal developing conditions before they become obvious. A slow decline from consistent 3s to consistent 2s over three months is a meaningful change that a vet visit on any single day might not capture.
The Monthly Check (Takes Five Minutes)
Body Condition Assessment
Once a month, do the rib check, overhead view, and side view. Note your assessment. Are you feeling more rib than usual? Less? Is the waist more or less defined?
Skin and Coat Check
Part the fur in several locations. Look at the skin. Note the coat's overall condition. Any new lumps, bumps, rashes, or areas of hair loss?
Dental Check
Lift the lips and look at the teeth and gums. Note any new tartar, redness, or odor changes.
Lump Map
If your dog has any known lumps, note their size (compare to a coin or measure with a ruler) and location. I recommend taking a photo with a coin for scale placed next to the lump. This makes tracking growth or changes over time objective rather than relying on memory.
The As Needed Notes
Whenever something unusual happens, jot it down with the date:
- Vomiting or diarrhea (once? Multiple times? What did it look like?)
- Any new symptom, however minor (limping, head shaking, coughing, stiffness)
- Behavioral changes (anxiety, restlessness, confusion, aggression)
- Changes in bathroom habits (frequency, volume, accidents, straining)
- Any medications given (including dose, time, and reason)
- Any new foods, treats, or supplements started
How to Keep the Journal
Use whatever system you'll actually maintain:
- A notes app on your phone (create a running note for your dog)
- A spreadsheet (simple columns: date, weight, appetite, energy, notes)
- A physical notebook kept near the dog food
- A dedicated pet health app (several exist, though a basic notes app works just as well)
The format matters far less than the consistency. A messy, imperfect journal you maintain weekly is infinitely more valuable than a beautifully organized system you abandoned after two weeks.
How This Pays Off at the Vet
Imagine walking into your vet's office and saying: "Over the past six weeks, her energy has dropped from what I'd call a 3 to a 2 most days. She's eating about 80% of her food instead of finishing it. Her water intake seems slightly increased, probably 10% to 15% more than usual. She had two episodes of morning stiffness where it took her about 30 seconds to work out the stiffness in her back legs. And she's lost about a pound and a half."
Compare that to: "She seems kind of off lately."
The first version gives your vet a clear diagnostic direction. The second version requires 10 minutes of questions that may or may not yield the same information, and those are 10 minutes of your short appointment window.
The Emotional Benefit
There's another reason I advocate for health journals that's less about medicine and more about peace of mind. When you're tracking your dog's health consistently, you're less likely to spiral into anxiety over a single off day, because you have context. You can look back and see that last Tuesday was also a low energy day but Wednesday was fine. You can see that the appetite dip happened once before and resolved on its own. Data replaces panic.
Conversely, when something is genuinely changing, the journal confirms your suspicion rather than leaving you wondering if you're being paranoid. You can look at the numbers and say "this is a real trend, not my imagination." That confidence makes you a better advocate for your dog.
Start Today
Open your phone's notes app right now. Create a note with your dog's name. Write today's date, their approximate weight (or schedule a weigh in this week), and a brief note about their appetite, energy, and anything you've noticed. You've just started a health journal. Do it again next week. And the week after that. Six months from now, you'll have a dataset that your vet would thank you for. Your dog can't keep their own medical history. You're it.
