Santosha as a child care worker, I love you! To have understanding parents is a carers dream! I've had parents that react as if you were intentionally abusing their child in a situation such as you described......

As to the biting - Kaz, I also love you! The way that parents react to biting can be extreme - until their child bites, then their attitude usually changes, though some still see it through rose coloured glasses - ie my child was provoked by someone else's horror!
Biting is very normal for some childrren, it's awful, as a carer we feel powerless as there really is nothing much you can do to prevent it, biters can be very sneaky - we had one who used to wait until some other drama had the carer/s busy and whammo. Others bite for absolutely no reason and just for exploration reasons.
Every parent will react differently, but coming from my point of view, biting is normal.


Edited to add: Yes Kazbah, it is not nice to be on the other side either- normally though a parent wouldn't be told who's child bit their child, but if it is an older child, then they will probably be able to tell mum who bit them.