dew claws on dogs

Question
Hello,
I have been doing a little research on dew claws, I am a little confused.  Do they have to be removed?

Answer
Hi Dawn,
No, they don't have to.  The main reason that they are removed, is that they tend to snag on things and will bleed. Also,if your dog is purebred and has puppies, they are usually removed and buyers will expect it.  Show dogs have to have them removed for show acceptance.  I think it's a good idea simply because it keeps them from being torn off when they are older when they get snagged.  
God Bless,
Becky