How to feature a sub site post on the main blog's home page?

I want to query the most recent post of a custom post type in a sub site and display the results on the home page of the main website. I've seen options like this:
query_posts( ‘blogid=2&category_name=animals&tag=feline’ );
But setting the blogid didn't work for me. The current blog was still selected.
Can someone point me in the right direction to do this? Thanks!
Tom