Hypoglycaemia (low blood sugar): the emergency every owner should know
Low blood sugar is the most urgent risk for a diabetic pet. Learn the warning signs, exactly what to do, and how to prevent it.
Hypoglycaemia (low blood sugar): the emergency every owner should know
Emergency summary
If your pet is conscious, rub honey or glucose syrup on the gums and contact your vet immediately. If your pet is unconscious, seizing, collapsed or cannot swallow normally, do not put anything in their mouth — contact an emergency vet immediately.
Of everything in diabetes care, this is the one to read carefully. Hypoglycaemia — dangerously low blood sugar — is the most urgent risk a diabetic pet faces, and knowing what to do turns a frightening moment into a manageable one.
Common warning signs of low blood sugar
These signs can appear quickly. Know them to spot hypo in real time.
Wobbliness or unsteadiness
Rear legs appear weak or unstable when walking or standing
Trembling or shaking
Visible shaking of the whole body or limbs
Disorientation or blank stare
Vacant expression, confusion, bumping into things, or appearing "lost"
Sudden intense hunger
Unusual eagerness for food or treats (especially unusual for your pet)
Severe: Collapse or seizure
Loss of consciousness or seizure activity. This is a medical emergency — take your pet to the vet immediately. Do not put anything in their mouth.
⏱️ Speed matters
Low blood sugar can come on in minutes. If your pet seems suddenly "not right" after insulin, treat it as a hypo first and ask questions later. Rub honey or glucose syrup on the gums and contact your vet immediately.
Prevention checklist
- ✓ Always feed with insulin (no exceptions)
- ✓ Never double-dose (most dangerous mistake)
- ✓ Keep exercise consistent
- ✓ Keep honey/glucose syrup accessible
If it happens (act fast)
- ✓ If conscious: rub honey on gums
- ✓ Call your vet immediately
- ✓ If unconscious/seizing: go to vet now
- ✓ Never put anything in mouth during seizure
What causes it?
Low blood sugar usually happens when there's too much insulin relative to food — after an accidental overdose, a missed or refused meal, unusually hard exercise, or (hopefully as treatment works) an improving condition that now needs less insulin. It's the mirror image of the high glucose you're used to watching for.
What are the warning signs?
Watch for weakness, wobbliness or unsteadiness, trembling, disorientation or a "vacant" look, sudden intense hunger, and — in severe cases — collapse or seizures. Signs can come on quickly, so if your pet seems suddenly "not right" after insulin, treat low blood sugar as the prime suspect.
What do I do right now?
Act immediately
If your pet is conscious, rub honey or glucose syrup on the gums and contact your vet immediately. The sugar is absorbed through the gums and can act fast. If your pet is unconscious or having a seizure, do not put anything in their mouth — take them to the vet straight away. Either way, your vet needs to know: this is an emergency, not a wait-and-see.
How do I prevent it?
Prevention is mostly routine: feed with insulin and make sure your pet has actually eaten; never give a full dose to a pet that has refused food without asking your vet; keep exercise consistent rather than occasionally extreme. There's one crucial rule:
Never double-dose
Never give a second dose to make up for a missed or uncertain one, because too much insulin is far more dangerous than too little.
Keep a tube of honey or glucose syrup and your vet's emergency number somewhere obvious.
Mello's reminders and clear dose log help you avoid the double-dose and missed-meal mistakes that cause most hypos.
When to contact your vet
- Contact your vet promptly if your pet’s symptoms, appetite, drinking, urination, behaviour or glucose readings change unexpectedly.
- Ask your vet for advice before changing insulin, food, exercise or any other part of your pet’s routine.
- Seek urgent veterinary care for collapse, seizures, severe weakness, repeated vomiting, or suspected hypoglycaemia or diabetic ketoacidosis.
Quick answers
What's Next?
Continue your diabetes management journey with these recommended next steps.
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A calm, step-by-step guide to giving your diabetic pet an insulin injection — gently, safely, and without the dread.
Keep your care organised
Mello is being built for calm, consistent tracking before the app launches.
Mello is a tracking and communication tool, not a substitute for veterinary advice. Always consult your vet for medical decisions about your pet.
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