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Why did my dog's gums and tongue turn blue? Is it an emergency?

Updated on September 23rd, 2025

Pet's info: Dog | Chihuahua | Female | 17 years and 5 months old | 8 lbs

What would make her head turn blue? She's okay now

1 Answer

Most Helpful Answer

Megan, DVM, CVA

Answered By Megan, DVM, CVA

Veterinarian

Published on July 25th, 2017

If her gums and tongue turned blue (cyanosis aka cyanotic), this is a sign of not getting enough oxygen. This can come from a heart problem, a tracheal issue like tracheal collapse, a severe allergic reaction, poor pulmonary perfusion (pneumonia, cancer, fluid around the lungs, etc) and much more. I would strongly recommend to take her to the vet for an exam to see if they can figure out what caused her to be cyanotic and hopefully prevent it from happening again. Lack of oxygen can be fatal if not immediately treated. I hope this helps!
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