there could be a bleed in the seminal tubes though the sperm of other mammals can range from white to gray
sperm
Depends whoes sperm it is
Causes it to be Sour.
Black blood is usually "old" blood, meaning it came from the upper levels of the intestines. Hie thee hence to the doctor!
sperm
Well, It's sperm.
luternizing
Fertilization of sperm-nuclei.
Sperm Particles
Sperm fertilizing an egg.
what causes black streaks on thumbnail
There is no difference between sperm/semen of white boy and black boy just as there is no difference in their blood.