Thank you all, I do appreciate it. I know it doesn't matter what size he ends up it was just that I heard so many comments last night that he looks like a 4 week old.
Mum and Dad are within standard I believe. I haven't seen Dad, but Mum looked only a little bigger than Moo (so smallish).
Only 7 whelped but 1 didn't survive.
Thanks again, I'll stop worrying about it!