Venomous a. : Full of venom; noxious to animal life; poisonous; as, the bite of a serpent may be venomous.

Venomous a. : Having a poison gland or glands for the secretion of venom, as certain serpents and insects.

Venomous a. : Noxious; mischievous; malignant; spiteful; as, a venomous progeny; a venomous writer.

Example:
What is the ratio of Venomous snakes to non Venomous snakes?

Taxonomy
snakes, venomous, animals, rattlesnake, bite, venomous snakes, species, Agkistrodon, Crotalus, cobras, viper, Cottonmouth, Copperhead, the Eastern, Eastern Diamondback, venom toxicity, King, venomous animals.

Defination from the web:
venomous animals. Includes lots of pictures of venomous snakes.