Symptoms of cats spraying blood include being in low spirits, like to sleep, nose, gums, mucous membranes and flesh pads are white and bloodless, short of breath, fast heart rate or weak, etc. Cats with anemia also look dull Weak and thin. If a cat suffers from anemia, the cat needs to adjust its diet and supplement nutrients. You can feed the cat chicken liver, chicken, fish, beef, fruits and vegetables, etc. The cat should also be given adequate sleep, which will help with the absorption of nutrients.