This. The primary goal of chemotherapy in pets is to minimize symptoms to improve their quality of life. It’s nowhere near the high dosage that humans undergo in order to completely eradicate their cancer.

My cat is technically on chemotherapy. She gets a pill 3 times a week and a blood test every 3 months to check that it isn’t causing issues with her bone marrow.

So far, no symptoms. Without it, she’d probably have died a year and a half ago. When I used to hear about a pet getting chemo, I had a mental image of a really sick pet, but it’s pretty much the opposite.