Kittens have shortness of breath, poor spirit, loss of appetite and constipation. The vet diagnosed it as anemia.
You can suspect intestinal obstruction or volvulus, mainly depending on whether the kitten often looks back at the abdomen. If this is the case, only surgery is needed, and intestinal plastic surgery or removal surgery is needed. If the value is not great, you can be euthanized! I'm a vet. This is just a suggestion. Diagnosis requires enema and angiography.