A cat shouldn’t be breathing more than around 40 breaths per minute when at rest, if her breathing is above this rate then it may be indicative of something going on. An increase in breathing may be due to infections, heart disease, cancer, pleural effusion, allergies among other causes; given Smudge’s age, I would have your Veterinarian take a look at her to be on the safe side. Regards Dr Callum Turner DVM

Anemia is a condition characterised by a reduced number of red blood (also known as erythrocytes) cells in the blood. Is not a disease in itself but a symptom of an underlying condition. It can be due to the premature destruction of the red blood cells, decreased production (due to cancers, kidney disease, certain infections or drugs), blood loss, tumours, blood clotting disorders and parasites such as fleas and hookworm.
There are various different causes for rapid breathing which may include infections, pain, heart disorders, dehydration among other causes; a cat’s respiration should be below 30 breaths per minute when at rest but if it is significantly above this rate at rest I would suggest visiting your Veterinarian for an examination to determine a cause. Regards Dr Callum Turner DVM