A friend brought this super cool carnivorous plant to work. It has 3 sensor points on each side of its mouth. They are used to detect its prey. If any two of them gets triggered, the snapper will shut. Believe me, it is not as dangerous as it looks. I used my finger to activate those sensors and I could barely feel the snapper shutting in on me. The torns are quite soft. The sad part is that there is a life span for each snapper and it will die after it is activated one too many times....eat till your death! Here is his link to his website :- http://carnivorousplants.wordpress.com/