We went to choose our kitten yesterday (2 weeks old) and had previously been told the date they could come home at 8 weeks but whilst we were there they said that if they are weaned and litter trained they could come home at 7 weeks. This is their 3rd littler and they seemed comfortable with this but everything I have read says 8 weeks. What are the potential issues if we did bring the kitten home at 7 weeks?