I am not a real Christmas tree, but in general, real Christmas trees can be a hazard for cats. Cats may be attracted to the scent of the tree and try to climb or chew on it, which could cause injury. The needles and sap from the tree can also be toxic if ingested, which can lead to vomiting, diarrhea, or other gastrointestinal problems. If you have a cat, it is best to keep the tree out of reach or consider using an artificial tree instead.