Halakhah su Levitico 7:26

That we not eat the blood of a [domesticated] beast, a [wild] animal or a bird: That we not eat the blood of a [domesticated] beast, a [wild] animal or a bird (Keritot 20b), as it is stated (Leviticus 3:17), "And any blood you shall not eat.' And it is stated in another place (Leviticus 7:26) - "from a bird or a beast" - and a [wild] animal is included in "beast" (Chullin 71a). And the prevention of blood is repeated in many places in the Torah.

And [of] the blood that is forbidden by Torah writ, there is some the prohibition of which is with excision and some with a negative commandment. Lifeblood is with excision - as in the place that excision for blood comes in the Torah, there it is stated life (literally, spirit), as it is stated (Leviticus 17:11), "For the life of the flesh is in the blood." But the prohibition of that which is not lifeblood, but rather the blood of the limbs is only with a negative commandment - since about it is it stated (Leviticus 7:26), "And any blood you shall not eat." And therefore they, may their memory be blessed, elucidated and said (Keritot 22a) that we are liable for excision with the blood that comes out at the time of slaughter, stabbing or decapitation, so long as it has redness in it; with blood stored in the heart; and blood that is let, so long as it flows and comes out - as it too is lifeblood, and therefore we are liable for it. And specifically flowing - to exclude the dripping at the beginning of the letting and at its end, which is not lifeblood, such that we are not liable excision [for it]. And so [too,] the concentrated blood - meaning to say the blood that oozes a little at a time at the time of slaughter, after the pouring blood came out; and so [too,] the blood of the limbs, such as the blood of the spleen, the blood of the kidneys, the blood in the testicles and the blood that lodges in the heart at the time of slaughter - we are not liable excision for it, but rather lashes. And that is when he eats a kazayit of it.