how to handle a toddler biting?

DS is 16 months old & has recently started to do this alot more. We have tried telling him "NO" in a stern voice but he laughs it off. We did a timeout & he really didn't understand the concept. What worries me is that he will bite someone other then DH & I.

He use to bite us only when he was tired or teething but I have noticed him doing it more now even right after a nap. Could it be an attention thing bc of his baby brother?

Re: how to handle a toddler biting?

DD is a biter and has bitten DS, another kid, her babysitter, and both DH and I. She used to bite when teething/tired and now she does it when she doesn't get her way

We did exactly what you tried, sternly saying no and timeout. At first she didn't understand, but eventually she made the connection and gets upset/cries over her timeout. It took a good month for her to understand that what she was doing was wrong. It still happens from time-to-time, but not as frequently as before.

I warned daycare that she's biting others, even though it hasn't happened there yet (only at her babysitter's house). They know to keep an eye out for it.

I would keep doing what you're doing and eventually he should get it and understand that it's wrong!