Oh no! Please help! I need answers!!!!!!!!!?

First, calm down! This happens to everyone at some time. Yes, you should tell your Mother but make sure you tell her the truth. If she finds out otherwise, it'll be worse. Hopefully she'll be understanding that this is just something animals do as well and forgive him too. But the bottom line is you need the work done and you can't lie to your mother about it. You'll need her help getting it done.