While researching something else, I came across these two comments from a WT on how we should view the blood issue, when it comes to our pets.
*** w64 2/15 p. 127 Questions From Readers ***
"Would it be a violation of the Scriptures for a Christian to permit a veterinarian to give blood transfusions to a pet? By all means, to do so would be a violation of the Scriptures."
"What, then, of animal food? May it be used if there is reason to believe there is blood in it? As far as a Christian is concerned, the answer is No, on the basis of principles already mentioned."
The WT goes on to make the point that an animal can kill and eat another animal including it's blood, but that would be down to the animal, and not a Christian who has chosen to feed it blood.
Don't forget, to do otherwise "would be a violation of the Scriptures latest wacky idea that has no scriptural basis".
Splash