I would guess that your predecessor stabbed at the ice layer with pointy knife instead of defrosting it properly.
Why would any pet ever claw inside your freezer?!.
I agree, these can’t be cat toothmarks because they’d be in pairs. And I’m extremely glad no cats were frozen in the creation of this post.
This wasn’t where the ice buildup was - I guessed maybe they left the door open at some point and an animal had a nibble
This wasn’t where the ice buildup was NOW, because they’d chipped it all away. Generally, marks from cat teeth come in pairs.
Doesn’t look like claw or teeth marks. Maybe those people b3fore you tried to speed up the defrosting by punching it with a sharp object like a knife that left tese marks?
Or an ice pick.
Soooo many horror movie ideas