i have recently taking in a 3yr old male yorkie i was told he was fantastic with kids and women but had a problem with men in which he tends to show his teeth and nip

he has been with me for just over a wk and had no problems untill yesterday when my partenr told him to STOP barking and he changed completly started showing his teeth and growling and when he tried to cal him by giving him a lapto reasure him he tried to bite him

we just ignored him for a wee while and let him come back to us but today he done the same with me when i told him no where he showed me his teeth and when i said no again he bit the bottom of my trousers plzzz help i dont want to have to find him a new home as i have 2kids and im very unsure of him now

thanx