Ewww it's awful when they bring dead or half dead things in
DCat only does this at Christmas time for some reason. Once she left a dead robin on the doorstep on Christmas Eve, the first I knew of it was when DH opened the door and announced "the cat's killed Christmas"'
One year she dragged an alive magpie in as we were all sitting eating Christmas dinner. That was...memorable.
She doesn't really do it at any other time of the year. Most odd. I seriously think that she believes she is bringing us a Christmas present.