Have you tried asking Wellerfeller? She home boards 'poos and lives just north of London.
We left Lolly for 3 weeks for a holiday when she was 6 months old. She stayed with friends and had a fantastic time. She's since stayed with another friend overnight (who has previously looked after our mutual friends dog who is definately a bit depressed when his owner leaves him) and she reassured me that Lolly was her usual self with no depression. I think it's good for them to get used to having sleepovers from a young age!
We left Lolly for 3 weeks for a holiday when she was 6 months old. She stayed with friends and had a fantastic time. She's since stayed with another friend overnight (who has previously looked after our mutual friends dog who is definately a bit depressed when his owner leaves him) and she reassured me that Lolly was her usual self with no depression. I think it's good for them to get used to having sleepovers from a young age!