Scary Ghost-Demon

I'm a complete goober. 

I'm doing my homework and keep hearing this weird low kind of moaning noise coming from my right. After about 15 minutes I start to freak out...is it a ghost? A demon? I lift my feet up, cause you KNOW demons and ghosts eat feet, hold my breath, mute the TV...yep, that noise is still there. As I get up to find some sort of ghost-demon weapon, I step on my poor cat Apu...who was on the floor to my right, zonked out, snoring. Sorry baby!