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How much expanding polyurethane glue (like Gorilla Glue) is toxic to a dog?

Dogs · Emergency guide

Last reviewed: 2026-09-05 · Reference ranges: ASPCA, Pet Poison Helpline & Merck Veterinary Manual

Short answer

Any amount of expanding polyurethane glue is a medical emergency for a dog. Even a small lick or a pea-sized piece can react with stomach fluids, expanding into a solid, obstructive mass that requires surgery. There is no safe amount — do not wait for symptoms. If you suspect your dog ingested any of this glue, go to the vet or emergency clinic immediately. Tell them the exact product type, and do not induce vomiting, as the foam can block the airway.

Why is this dangerous?

Polyurethane (Gorilla-type) glue reacts with stomach moisture and expands into a solid foam mass that cannot pass — a surgical emergency. This happens with surprisingly small amounts.

Cyanoacrylate (super glue) bonds skin and can glue the mouth or eyelids shut, and white craft glue is mostly low risk but can cause vomiting in large amounts.

Why speed matters

Delaying care significantly worsens outcomes. Some signs appear hours or days later, so "looks fine right now" is not a reason to wait.

Signs to watch for

  • Vomiting, retching, unable to keep water down
  • Bloated, painful abdomen
  • Not eating, lethargy, weakness
  • Mouth or lips stuck together (super glue)
  • Collapse and dehydration as the mass blocks the stomach

What to do right now

  1. Go to the vet now — expanding glue must be removed surgically and delay makes it worse.
  2. Tell the vet the exact product type (polyurethane, super glue, craft glue); treatment is completely different.
  3. Do not induce vomiting — the foam can block the airway on the way up.
  4. For super glue on skin, use warm soapy water or veterinary advice; never pull bonded skin apart.
If your pet shows any of the signs above, go to the nearest emergency vet now and call ahead.

Open the full emergency guide: Glue & Adhesives (Including Expanding Glue) →