My chihuahua with heart disease is breathing fast. Is it an emergency?
Updated on September 23, 2025
Pet's info: Dog | Chihuahua | Female | spayed | 12 years and 5 months old | 3.1 lbs
My chihuahua has congestive heart disease and is on vetmedin and Lasix. All of the sudden her breathing is extremely fast and she can’t rest. Can I give her more meds? She weighs 4 lbs. she takes half of a 1.25 mg of vetmedin and a half of a furosemide twice daily. Thank you
Hi, thanks for using Petco Pet Education Center, formerly Petcoach! Poor Roxy!
If Roxy is having trouble breathing she needs to see a veterinarian right away. We have to assume she is in congestive heart failure. Just increasing the medication likely will not be enough. You can give her another 1/2 of furosemide while you find an open emergency room. Oral medications are not quick enough in situations like this. She likely needs oxygen and injectable medications.