Oh, gosh! I've never had a little boy in a small form before.
I know in an emergency you can make a bb out of a pantyliner and use something to tie around him.
I'm a big help, huh?
I thought about you this evening when I saw Nevada, MO had the cutest little one that was a year old. Forget now if it was a girl or boy, but it was a shih-tsu/maltese mix. They had a picture and had posted it on pet-finder. Just darling.
I hope you all get along great. I'm sure he's in heaven right now.