My Dog
Profile & settings
About your dog

Add these once and they'll show as tap-to-call buttons on the Emergency page.

Saved to this device. Use Back up below to download a file you can restore from; the two are separate.

Backup & restore

Everything is stored on this device only; nothing is sent anywhere. Back up saves a file to your Downloads folder that you can restore from later, or use on another device.

About this app

Diabetic Dog Companion is a free tool for owners of dogs with diabetes. It helps with part-meal dose adjustments, glucose curve logging, diet planning, and puts the most important facts close at hand.

It never sets or changes your dog's insulin dose; that is always your vet's decision. All guidance is sourced from the 2026 AAHA Diabetes Management Guidelines for Dogs and manufacturer package inserts.

Your data is stored on this device only; nothing is sent anywhere.

Full Windows app: prodexa.co.uk/diabetic-dog-companion

Insulin & doses
Set your dog's dose in My Dog
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How the Part-meal helper works

This page does arithmetic on the dose your vet prescribed; it never sets or changes that dose itself.

  1. Your dog's dose is entered in My Dog, not here, along with the syringe type and when insulin's given. Set it there once and it appears at the top of this page from then on.
  2. Usual dose vs give this time. The Part-meal helper shows both side by side; the standing dose your vet set, and what to give for this particular meal if your dog didn't finish it.
  3. Drag the slider, or weigh it properly. Roughly how much was eaten works fine, but entering the grams given and grams left turns it into an exact figure instead of a guess.
  4. Not sure how much to feed in the first place? The Diet section works out a recommended weight from your dog's ideal weight and activity level, for one food, or a combination of several in the Meal builder. That's the figure to use as food given here.
  5. Once-daily basal insulin (Toujeo, Tresiba) is different. If that's what's set in My Dog, the whole Part-meal helper disappears; feeding and injecting aren't tied together the way they are with Caninsulin or ProZinc, so there's nothing here to calculate.
Your prescribed dose
Always feed first, then inject; give the full dose unless your dog ate less than a full meal (use the part-meal helper below).
Part-meal helper

If your dog ate only part of the meal, adjust the dose. Drag the slider, or weigh what's left for an exact figure.

Weigh it instead of guessing (optional)
g
g
Usual dose
—
units
Give this time
—
units

For a recurring part-meal or a second missed meal in a row, phone your vet rather than adjusting the dose yourself.

This scale is the author's own, more cautious rule. AAHA's is simpler, and the card below shows how the two compare. After a reduced dose, do not make up for the missed meal with extra food or treats before the next meal.

How this compares with AAHA's own rule

The part-meal helper above is the author's own approach, based on experience, not the AAHA guidelines. AAHA's own rule is simpler: full dose at half a meal or more; half dose for anything less, including nothing eaten at all. There is no scale in between in AAHA's own rule. A dog that eats a little and a dog that eats nothing get the same half dose.

Where the two differ, that is deliberate: trading a slightly higher glucose reading for a lower chance of hypoglycaemia. If you are not sure which fits your dog, ask your vet.

If you suspect a hypo, treat it immediately (the red Emergency button) and phone your vet.

The 11-hour rule

Never inject less than 11 hours after the previous injection. Two doses working at the same time significantly increases the risk of a dangerous low. If an injection is late, still give it once your dog has eaten, a late dose is better than none; just push the next one later too, so the gap from the late one stays at least 11 hours, rather than keeping to the usual clock time.

Monitoring
Glucose readings & curve

Got feedback on monitoring or the glucose curve? Let us know under Support.

Glucose curve

The green band is where most readings should sit (4.4–11 mmol/L · 80–200 mg/dL); an occasional reading up to 16.7 (300) is acceptable. Gold dashed lines are your meal/injection times; the green shaded bands are walks. The lowest point (the nadir) is marked in red; it is the number your vet uses to judge the dose.

Walks on this day (shown as shaded bands on the curve)
to
Add a reading
Recent readings
Backup & restore

Everything is stored on this device only; nothing is sent anywhere. Back up saves a file that you can restore from later, or use on another device.

Emergency: Hypo guide
Low blood glucose treatment
Signs of hypoglycaemia (low glucose)

• Weakness or wobbling
• Trembling or shivering
• Glassy or unfocused eyes
• Confusion or disorientation
• Unsteady walking, stumbling
• Seizure or collapse

If you see any of these, act immediately. Do not wait to test.

Treatment: do this now
1
Give sugar straight awayEarly signs, alert and able to eat: a small carbohydrate meal such as rice, bread, pasta or their usual food.
Moderate signs (wobbly, trembling, twitching, confused), too disoriented to eat safely, or will not eat: rub honey, corn syrup or glucose gel between the cheek and the gum with a cotton bud or the tip of a needle-free syringe. Never use your fingers, and never pour liquid into the mouth.
Unconscious or fitting: the same method, a little at a time, never towards the back of the throat, and go to an emergency vet at once.
2
Wait 5–10 minutesKeep your dog calm, warm and still. Do not leave them alone.
3
Test if you canIf your dog responds and you can test safely, check the glucose. A reading above 5 mmol/L (90 mg/dL) is a good sign.
4
Offer a small mealOnce alert, offer a small carbohydrate-rich meal such as rice, bread or their usual food.
5
Phone your vetImproving does not mean the danger has passed, so even if your dog appears to have recovered, your vet needs to know. Once the low is confirmed, you don't need to wait for the vet to decrease or skip the next scheduled dose, just never increase it. A repeated hypo is worth a proper review of the dose with your vet.
⚠ If your dog does not improve within 10 minutes, or loses consciousness, go to an emergency vet immediately.
Do not inject

Never give insulin during a hypoglycaemic episode itself, before glucose has come back up. Once the low is confirmed and your dog has recovered, the 2026 AAHA guidelines say you don't need to wait for the vet to decrease or skip the next scheduled dose; never increase it on your own. Still tell your vet what happened, since a repeated hypo is worth a proper review of the dose.

What causes a hypo?

Common causes include: too much insulin relative to food eaten, a smaller meal than usual, unusual exercise shortly after injection, a fur shot where the dose was repeated, or the Ketoconazole drug interaction (which reduces the body's ability to counteract insulin). Tell your vet which you suspect.

FAQs
Frequently asked questions
Learn
Plain-English guides with sources
Support
Community, helplines & wellbeing
Give feedback on the app

Found the monitoring tools or the diet & weight calculators useful, or confusing? Two minutes of honest feedback helps decide what gets improved next.

Give feedback →
Diet & weight
Calorie calculator & food guide

Got feedback on the diet & weight tools? Let us know under Support.

Get started
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New here? Start with these steps

There's a lot on this page, but to begin you only need two things: how much to feed, and, if you need a new food, one that isn't too high in fat or starch. Here's the short path. Protein, fibre and the meal builder can wait until you've found your feet.

  1. Enter your dog's weight. In Daily calorie calculator just below, put in your dog's ideal weight, activity level and meals per day. It works out the calories per day, and how many that is per meal.
  2. Already have a food? Type its name in the Food finder and it shows the grams to give per meal; that alone is enough to get started. You can also search it in the Meal builder if you'd like to combine two or three foods.
  3. Choosing a food, or checking yours? In the Food finder, use the fat filter, ≤14% (a common working threshold) or ≤10% (a more conservative target if your dog's had pancreatitis), and the carbohydrate filter; Lower, Moderate or Higher estimated carb. Both are useful starting points, not hard rules; some dogs do fine outside them. You can also tap Sort by: Lowest fat. Each food shows the grams per meal for your dog.
  4. Food not on the list? Use the DMB checker, enter the fat, moisture, protein and fibre from the label and it works out the true fat figure plus an estimated carbohydrate figure, so you can compare properly. Give it a name there and save it and it's remembered as one of your foods too. Or add it properly in the Meal builder's "not in list" box with the figures from the label; either way, from then on it shows up as your current food in the Food swap calculator and the Food finder too, so you can compare it against anything on the list. This is worth doing for a newly diagnosed dog especially, since the old food often isn't on the list at all.
  5. Feeding more than one food? Use the Meal builder. Add your main food first, its amount fills the meal automatically, then add the other foods by the amount you actually give, and the main food adjusts to keep the meal on target.
  6. Food run out, or your dog's gone off it? Use the Food swap calculator below, pick your current food and the new one, and it works out the grams that give the same calories, so the switch keeps the meal on target from day one.
  7. Later, when you're ready. Protein and fibre matter too; but don't worry about them at the start. They're shown on every food for when you want them.
  8. Two golden rules. Change foods slowly, over 7–10 days (see "Changing your dog's food" in Learn), and whatever the app suggests, your vet always comes first.
► Diet targets for your dog
Calculate
Daily calorie calculator

Enter your dog's ideal weight and activity level to see daily calories; then the food list below shows grams per meal.

Based on the Waltham Energy Calculator. Use ideal weight, not current weight if your dog has lost condition.

Meal builder

Mix up to 3 foods and check the total calories and combined fat. Search by name to pick from the list, or enter values manually for any food not listed (e.g. fresh mackerel).

Fat filter:
Est. carb (NFE):
Look up & compare
► Food finder (185 foods)
DMB fat & carb checker

Food not in the list above? Enter figures from the food label. Fat and moisture give you the true fat; add protein, fibre and food type to also get an estimated carbohydrate figure.

Dry foods typically show 8% moisture. Wet foods are usually 75–82%. If moisture isn't on the label, use 8% for dry and 78% for wet.

Give this food a name to save it; it'll then show up in Food finder, Meal builder and the swap calculator too.

Food swap calculator

If your usual food runs out or your dog goes off it, this works out how many grams of a different food gives the same calories per meal.

Only foods with calorie data appear in search results. The true fat figures help you judge whether the new food suits your dog. Talk to your vet if you're not sure.
Your data
Backup & restore

Everything is stored on this device only; nothing is sent anywhere. Back up saves a file that you can restore from later, or use on another device.