I have, it really stinks. I'm sorry you are still dealing with them!
I had this about my children so I feel you. My suggestion is to hit it head on. I will literally go lay my hands on my son anytime I have an intrusive thought like that because it is so horrifically painful and upsetting that I just am not going to allow it and I show ocd who's boss. It freaking sucks at first and you will feel the anxiety but anxiety never last and we are never really going to hurt them. So use your intrusive thoughts and do exposures with your fur babies. It's your freedom from the thoughts
Love this.....mine also targets my children. Sometimes I feel guilty and shameful, but I like your philosophy of leaning in and tackling exposures.