I am looking after 3 dogs today. My own and an unwell neighbour's 2 dogs. They are truly lovely. I have also bathed them in lovely warm water as there was a smell (I did ask neighbour if that was ok).
However they have dominated the furniture and poor Maxie is put out. He doesn't know what's wrong LOL.
The two dogs won't leave me alone - just want loads of cuddles. Think Maxie is getting worried at losing his Mama.
Dogs can have many different reactions, you need to make sure that you calm him down that is the most important thing to do. Use highly valued treats to reward calm behavior and let him know how important he is for you. There is a very good site that you can visit https://animals.net/bergamasco-sheepdog/for more information
We used to look after Jen's brothers rescued greyhound, whilst they were working. Our dogs nose was put out of place, I used to walk them separately as it was easier for me, they had a massive fight when I got greyhound back, I literally had to dive on greyhound to protect him, they both ended up in naughty corners.