The cat came back

Just something I noticed. At the begining of the movie, that cat's there, sitting on the guy's chest, specifically on the call for help device(Emergancy Amulet or whatever, I can't remeber right now.), then we don't see the cat for a while, which makes perfect sense as it's left at the house. Then when they come back to the house, to get the photograph, the cat's still there. But this time, instead of jumping on his chest, it some how hides inside the bed. You can see it scamper inside. Now, the Ministry of Wellfare gets the bed back. Apparently, they poke around inside to try and get the black box. Why didn't they find the cat? and why didn't the bed prevent the cat from entering it in the first place? Then we don't see the cat till the end, where it runs off with, probably, a key piece of the bed. And yet, we see the bed(Of sorts) return after that, with the cat... it just seems like something to watch out for. You know? Anyway, this place is dead, and I just Netflix'd this... so I figured I might say something about it.