animations, spitting cobra and death adder

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: Dear All, : I am researching for an exhibition about predators which includes two interactive science exhibits about venomous creatures. : I have read some journal and textbook related information, but have not found definitive answers to the following questions: : 1. do any animals predate by SPRAYING rather than injecting venom? : 2. does the spitting cobra spray venom purely as a defence mechanism, or can it do this to hunt prey as well? : 3. if the death adder moves the tip of its tail to attract prey in the guise of a worm, why do certain prey which do not normally consume worms still approach the snake? : 4. where can I access animations showing a cross-section of the envenomation action of the wasp, snake (back and front fang), scorpion, box jellyfish (or general nematocyst action), cone shell and shrew? : I would appreciate it if you could suggest sources of information or researchers to assist with my investigations. : Thankyou : Cindy Chambers : Questacon - The National Science and Technology Centre : Canberra, Australia

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