Because they're predatory and carnivorous? If they're carnivores, the reason for their fangs is to chew and consume their food with ease.
The only reason for the fangs is to cause the weeping angels to appear more frightening to the audience.
To make them look scary and so when they open their mouths it looks like they are going to bite you.
They don't they believe in angels not weeping angels
Weeping Angel
No the weeping angels weren't known before doctor who
yes, the weeping angels will be after the daleks. the angels will be in a 2 parter and after the angels, the next monster will be vampires
weeping angels first appeared on the episode "blink" on the ninth of june 2007.
If the weeping angels or lonely assassins catch you, they will pull you back in time or break your neck
LOTS
no
The weeping angels appeared in the doctor who episode Blink episode 10 of series 3 doctor who
steven moffat
In 2008 with Martha the weeping angels were in it and in the 5th series of doctor who they WILL RETURN i think i know how if they are the same weeping angels that Sally sparrow faced then i think i know. When they defeated them in the house the light bulb was ON and every light bulb has to go out one day and the light bulb might of run out and the weeping angels can't see each other so they can move!!
The Time of Angels/Flesh and Stone.