My cat Daphne went a bit dowly (under the weather) in late summer. She wasn't her usual self, slept more than normal, lost some weight, and didn't instantly purr when stroked. In the end, we took her to the vets and they diagnosed asthma. She got some tablets which we managed to secrete in some treat food until she found them. No way can you get tablets down her so we had to stop her treatment. Since then she has perked up and is back to her normal self. She has no access to anything she shouldn't have so anyone know what the real problem was as we are unconvinced about her having asthma.