Hypoglycaemia in dogs

Hypoglycaemia in dogs

By
✔ MRCVS
BSc
BVM&S
FHEA
Updated October 16, 2025
4 min read

What to do

Causes

When to worry

Prevention

Home treatment

Vet treatment

Risk

What are some other causes of hypoglycaemia symptoms in dogs?

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Hypoglycaemia in dogs

Hypoglycaemia in dogs

By
✔ MRCVS
BSc
BVM&S
FHEA
Updated October 16, 2025
4 min read

Hypoglycaemia in dogs means having low blood sugar. The risk of hypoglycaemia is greatest in very young, thin or small dogs. And in diabetic dogs on insulin treatment.

Blood glucose (sugar) provides the energy to fuel essential body functions. Hypoglycaemia symptoms happen when organs that need lots of fuel don't get enough to work. Symptoms of hypoglycaemia range from mild to life-threatening. It comes on quickly and can rapidly worsen. Always call a vet if you think your dog may have hypoglycaemia.

What to do if you think your dog has hypoglycaemia >What to do if you think your dog has hypoglycaemia [What to do

Common causes of hypoglycaemia in dogs >Common causes of hypoglycaemia in dogs [Causes

When to worry about hypoglycaemia >When to worry about hypoglycaemia [When to worry

How to prevent hypoglycaemia in dogs >How to prevent hypoglycaemia in dogs [Prevention

How can I help my dog at home if they’re hypoglycaemic? >How can I help my dog at home if they’re hypoglycaemic? [Home treatment

How do vets treat hypoglycaemia in dogs? >How do vets treat hypoglycaemia in dogs? [Vet treatment

Which dogs have a higher risk of hypoglycaemia? >Which dogs have a higher risk of hypoglycaemia? [Risk

What are some other causes of hypoglycaemia symptoms in dogs?

  • Pregnancy: particularly unplanned and undetected pregnancies. Mum puts all her energy into the growing puppies inside her and needs adequate nutrition in the final stages.

  • Addisons’s disease: dogs without enough cortisol struggle to manage glucose levels when they’re stressed.

  • Liver shunts and epilepsy: symptoms of weakness, unsteadiness and seizures.

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