Because the viper is arboreal, most bites to humans are to hands, fingers and occasionally to the face. They usually result in lots of pain, swelling, bleb formation, bruising and sometimes necrosis, that may lead to contraction or even amputation. The most common effects that happen from the venom are vomiting, diarrhea, prostration, or sometimes loss of conciousness. There are sometimes very severe cases that lead to death, mainly to crop farmers and plantation workers. Oh, a word of warning, sometimes vipers get accidently shipped overseas in banana shipments, so be careful if you have to open any up.
Vipers use their sense of smell to find mates.
They face each other with the head and the forepart of the body held erect, while trying to puch the other to the ground. This sometimes can go on for hours. The ironic thing is that during this competing there is no biting from either contestant. Vipers bear litters of 6 to 20 live young that range in length from 5 to 8 inches. The young look exactly like the adult except they are smaller.