Why can’t cats be service animals?

My new cat has started to come over and head butt my whenever my blood pressure spikes or is about to spike.

I feel like with training she could definitely do this every time and I would know to get my blood pressure cuff to check my stats and take my medicine and relax until it goes down. Cause sometimes I don’t realize until it’s too late and it’s already super high and I don’t have the ability to grab the stuff I need.

She’s also SOOO good when I take her out. We even went to hooters yesterday and sat at the outdoor tables after her vet visit.