Possible Clues:

• Venomous African snake (often black)
• Venomous snake; rhymes with dance
• Poisonous creature a doctor kept in Massachusetts
• Snake
• Cobra kin
• Black ___ (deadly African snake)
• Old lady doctor, a deliverer of poisonous injection?
• Venomous reptilian male graduates going head to head
• Black ___ (deadly biter)
• Tropical rainforest menace