Looks like teeth marks.
3 seconds sound clip from the The Amityville Horror (1979) movie soundboard.
You can hear this line at 01:37:58 in the Blu-ray version of the movie.
Quote context
[...]
- Oh, no. Oh, no. I'm coming apart! Oh, Mother of God, I'm coming apart!
- George! George, what happened?
- I was just dreaming. I'm sorry if I woke you.
- Oh, my God, what happened to your foot? Oh, look.
- Will you stop nagging at me?
- It's always so cold in here.
- Let's get out of here, huh? Let's just pack up our stuff and go.
- Would you please leave that damn fire alone and listen to me?
- I'm not going anywhere! You're the one that wanted the house. This is it, so just shut up!
[...]