Filter by directory and all subdirectories in Google Analytics

I am trying to configure a filter to include only data for a specific directory and all its subdirectories.

For example, I would like to include data from a directory dogsand subdirectories

http://www.mysite.com/dogs/
http://www.mysite.com/dogs/index.htm
http://www.mysite.com/dogs/breeds.htm
http://www.mysite.com/dogs/puppies/
http://www.mysite.com/dogs/puppies/index.htm
http://www.mysite.com/dogs/puppies/care/
http://www.mysite.com/dogs/puppies/care/feeding.htm

When creating a new filter, I think I should select Pre-defined filterto and Include only traffic to the subdirectories that begin withsubdirectory ./dogs/not case sensitive

I'm a little confused if it should be that begin withor that are equal to. Can I use that begin withmy subdirectory in my situation and is it correct?

(I ask because it takes 24 hours to update the data, so getting the wrong costs takes a lot of time)