I don't think it matters but I do know that they usually drink warm blood.
Usually they feed on warm-blooded animals (that includes us)
The reason why vampires in the Twilight series are cold is because they have absolutly no blood in their bodies. Blood makes a body warm, so since they have none they are therefore cold.
Mosquitoes drink whatever blood they find.
Warm blood
Your blood is warm always but when you are cold your blood is warm Your blood is warm always but when you are cold your blood is warm Your blood is warm always but when you are cold your blood is warm
cold blood
Coelenterates are not cold nor warm blooded
Warm blooded
Vampire bats are warm-blooded. "Human" vampires are mythical creatures, but if they were to exist, they couldn't be cold-blooded because cold-blooded animals must regulate their body temperature externally, using heating mechanisms from the sun. But if vampires do not have circulatory system, then they are neither warm nor cold-blooded creatures.
Warm
They are warm blooded.
Fluids help you blood circulate efficiently which in turn helps your body to stay warm.