Cats can eat raw meat to produce blood, but there are some precautions. Raw flesh and blood is a natural food for cats, which can provide rich nutrition and help to grind teeth. However, there are several points to note:

1. Ensure the safety of meat and blood sources: choose fresh and high-quality meat, preferably frozen, to kill possible bacteria and parasites.

2. Boning: When feeding cats with flesh and blood, you must bone, because bones may cause suffocation or stab the digestive tract.

3. Control the consumption: Raw meat and blood should be part of the cat's diet, not the main food. Ensure that cats get a balanced diet, including meat, vegetables and cat food.

4. Observe the cat's reaction: each cat has different tolerance to raw flesh and blood, and some cats may have indigestion or allergic reaction. If the cat has vomiting, diarrhea or other abnormal symptoms, stop feeding raw meat immediately and consult a veterinarian.