I too took on a bitch ,we did not know that she was in pup either. The previous owners cared not a hoot until about a week after the pups arrived....and then about when the pups were 21 days she turned up demanding a pup.She was told a very firm no.She left.
She returned 30 minutes later with the local Ranger to 'seize' mum and pups.She was legally entitled to as she was still chipped in her name.
That was my biggest mistake and I can say it was one of the hardest lessons ever learnt. The Ranger also decided that Mum was a restricted breed and took all pups and her straight to pound.
A notice of Intent was issued to the previous owner and the bitch went home with her.
The pups did not
And to top it off the previous owner ignored the NOI and the bitch was also reclaimed by Council.
Now had I know then,what I know now,those dogs would of been safe in my home and the Ranger and previous owner plus the police would of been politely told "see you in court". We had many witnesses as well as the fact it was her mother who actually brought her to us on the way to dropping her off at the pound.
But the main thing is I should of transferred her chip into my name asap.
And if you havnt already done so,then my advise is to do it asap.