When you say, 'our calico'...Cats are funny creatures, we've bought a scratch box which has cat nip in it (basically a cardboard box with corrugated card inside that the cat nip can fall between). Munchie, our calico, has taken to sleeping across it, front legs sort of cuddling it, so no one else can have a go. I went to bed at 11 last night and there she was, woke up at 5 this morning and she hadn't moved!
Something like this:-
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