The Ants Go Marching

The video is a children's song about ants marching in increasing numbers, from 1 to 10. Each verse describes the ants marching in pairs, with a little one stopping to perform a specific action, such as sucking his thumb or tying his shoe. The song repeats the pattern of marching and stopping, with a rhythmic 'boom' sound, and concludes with the ants marching 10 by 10.

What do the ants do to get out of the rain?

How many by how many do the ants march in the last verse?