I'm so sorry you're going through this. I get awful awful intrusive thoughts about harming animals, I am an animal lover, I give money to animal charities, I'm a vegetarian and would never hurt a spider but I get awful thoughts about hurting animals or awful pictures in my head of animals being harmed - especially dogs. I had CBT last year and after 7 sessions felt brave enough to tell my therapist about these thoughts as I didn't want him to think I was a danger. He told me straight away it was something called Control OCD and said it was normal for people with childhood trauma to have these thoughts. I've had them relating to children before, but they are mostly related to animals and they are so overwhelming and debilitating. Try to google Control OCD and dealing with intrusive thoughts. Thanks so much for having the courage to share. I hope your post and the responses help other people. All you need to know is there's nothing wrong with you and it's something you can get help for. Sending you so much love Xxx
Also, I don't know if anything in particular triggers you. But I find any news articles about violence against animals or humans triggers me, also films can trigger me too.
Theres an amazing website called Doesthedogdie.com which is great for people with triggers to let you know if a certain film has any triggers in, e.g animal cruelty, violence towards children, sexual abuse, suicide, drug addition, and loads more. Id recommend it, it's helped me so much this year xx