pump blood you a******
I don't see how it is possible for a rat to drink its own blood. If your rat has a wound and it is licking at it, it is all right for him to consume small amounts of blood. However, if your rat is bleeding at all you should take him to a vet right away.
Possibly, but it won't affect them. Rat poison is an anticoagulant and the "blood" of insects is completely different than the blood of mammals.
The rat spleen filters blood, removes old or damaged red blood cells, and plays a role in the immune response by producing antibodies and storing immune cells.
Rat poison makes blood stop clotting and stop working.
That isn't blood, the red discharge around your rats nose is called porpythrin. It depends how much there is; porpythrin is normal for rats to have every once in a while; rats also get it around their eyes, too. Don't worry about it unless it appears that your rat's "crying blood" or sneezing red liquid or they have so much on their nose that it's drpping.
estrogen
to pump blood around the rat's body
Pheromones released from the blood stimulate receptors in the anal gland of the rat, which, in turn, produce endorphins -- neurotransmitters that are commonly associated with pleasure. Thus, the more a rat smells blood, the more pleasure it receives, explaining its attraction.
Yes, Warfarin has been used as a rat poison in the past. It is also a blood thinner and therefore used to treat blood clots, such as an embolism, and prevent their recurrence.
True Blood - 2008 I Smell a Rat 3-10 is rated/received certificates of: Netherlands:16 USA:TV-MA
The rat would die because the venom would enter the blood stream.