Trouble Breathing Cat 10+ Years

Based on the history you provided, the following are the most likely causes for your cat’s trouble breathing. Not listed here but a possibility for trouble breathing at this advanced age is cancer of the upper or lower respiratory system, seen as primary disease in some cases, but also commonly present secondarily as spread from another primary cancer elsewhere in the body. Again, we cannot emphasize enough that trouble breathing is a medical emergency and a veterinary visit is recommended ASAP. If you still seek further information, please visit our
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Asthma
Congestive Heart Failure
Feline Herpes Virus
Complications from heart murmur
Heartworm
Pneumonia