If a kitten is cut in half by a knife, this is a very serious injury that requires emergency measures as soon as possible. Take the kitten to the nearest pet hospital or veterinary clinic immediately and let a professional doctor handle it. Doctors may need to perform emergency surgery to perform sutures and stop bleeding. During the process of transporting the kitten, try to keep its body stable and avoid excessive movement and vibration to avoid aggravating the wound.
If possible , you can try to wrap the kitten's body with a clean towel or gauze to prevent the wound from further spreading or being contaminated. During the transport to the hospital, you can try to gently interact and comfort the kitten to make it feel warm and safe. During the handling process, we need to remain calm and rational and try our best to help the kitten get through the difficulties.