Household

Thermometer Mercury

Toxic for Cats

Moderate risk

🐶

For Dogs

Toxic

🐱

For Cats

Toxic

View dog safety info →

Symptoms to Watch For

GI upset; chronic exposure causes neurological damage

What You Need to Know

Elemental mercury from a broken thermometer is relatively low acute toxicity if swallowed (passes through). Inhalation of mercury vapor is more dangerous. Clean up carefully and ventilate.

Source: Pet Poison Helpline

If your cat ingested this, act fast

Call ASPCA Poison Control: (888) 426-4435 or your emergency vet immediately.

View full emergency guide →

Safe Alternatives Your Cat CAN Have

Thermometer Mercury isn't safe, but these are vet-approved:

Glow-in-the-Dark Stars

Frequently Asked Questions

Is thermometer mercury safe for cats?

Thermometer Mercury is considered TOXIC for cats. Elemental mercury from a broken thermometer is relatively low acute toxicity if swallowed (passes through). Inhalation of mercury vapor is more dangerous. Clean up carefully and ventilate.

What are the symptoms if my cat eats thermometer mercury?

Symptoms may include: GI upset; chronic exposure causes neurological damage.

What should I do if my cat eats thermometer mercury?

Contact your veterinarian or the ASPCA Animal Poison Control Center at (888) 426-4435 immediately. Do not induce vomiting unless instructed by a professional.