hi there , i also have a 14 month old boy who sometimes bites ( is cutting 3 molars ) and pulls hair . He is doing both from frustration due to teething pain , i just say no & put him on the floor so he realises that he's hurt me . I did the same with my older son at same age & it did eventually work .
I must say i strongly disagree with biting your child back esp a toddler , his teeth are prob killing him.
My son is just so frustrated at minute , & terrible seperation anxiety , unfortunately my 4 yr old also seems to be on the receiving end of the biting & hair pulling to
hope it improve Sarahx