FIL, getting on my nerves.!!!!!

So I live with my husband and his parents his dad is 70 and his mom is 50 ( that's a hole different story) but ever since he found out that we are pregnant he has been trying to tell me things like I don't know them and I do my research and he has never gone to school at all, he doesn't know how to read or say lots of words or the meaning. But he does tons of thing and they get on my nerve so much. Recently my husband and I let his dog come inside for a couple weeks but I mad sure I showered him and stuff. But any time, no every time I walk by the dog his dad goes "bite her paul, bite her paul!" And I say "if he bites me I'm going to kick him because you shouldn't train him to bite when a baby will be coming" he says "oh he won't " but a dog will if they get trained to. I take care of the dog mostly so he won't bite me unless I'm trying to clip his nails. But the fact that he says that all the time pisses me off. And as a pregnant woman I am easily pissed of if someone does the wrong thing and I have trouble sleeping. So when I'm in bed and my husbands dog is in my room whining because myFIL is behind the door saying "wake her up paul, wake her up paul,wake her up paul" I get pissed of so much because he always does this shit or when he is mad at my husband he goes after me and says mean things about me. Or when I'm trying to sleep he slams the doors when he is mad at my husband. I told my husband if he does this shit when the baby is born mama bear is going to chew him a new ass. Because im sick of it!