i know that this may sound bad and some of use out there might not like it but it worked for me. children dont really understand when they bite u they are hurting u most times. so i found out that if u make them hurt them self like they bite u by sticking their fingers in their mouth and close their teeth on their finger they seem to know when they bite it will hurt. i have done this with my son and he only bite me twice and i have had no trouble since. ( touch wood). im sorry if this affends anyone.

The first time my daughter bit my nipple I think I got more of a shock than it hurt but I yelled no.

She cried from fright and since then all i have to do is a firm no and she backs off.

I read that if you bring them close to you they have to suck not drag and bite.

Biting siblings if a different issue.  He sure is starting early.  Ty my oldest picked this up at daycare.  I'm sure he was past 2 years old.  He bit be on the leg once.  I bit him back and he did try again and I warned him I'd get him back.  I said remember it hurts.  It's not nice.  That nibbed it in the bud.  He never did it again.  Even when he came home with more bite marks at daycare. 

Because of the age he may not understand even a light bite back.  Maybe if he sees you sad  and say mummy is sad when you bit your brother/ sister.  Say sorry and hug and say this makes mummy happy.

Hope this is of help.

O

at eleven months your child wil probably understand the word no. if they continue doing it anyway, find a kind of mild punishment so they know its wrong.

my brother was autistic ,and he used to bite people. after a year or two we ended up curing this habit by biting him gently back, and he stopped quickly, buti would only use this at an absolute last resort.