Fortunately, this poor thing isn't a real cat.
It's a photo of a sculpture by ELWE, for which salt crystals were artificially grown on a plastic cat dummy. For this purpose it had to spend quite some time in a salt solution until the individual crystals coalesced into a thick coating. With the right lighting, this salt coating looks astonishing similar to a layer of ice. Presumably, this would go beyond hypothermia if it were a real cat with a real coating of ice.