How is sound usually added to cartoons during the production of them?

Hi. I am interested in producing my own animation and I am curious about this. I know if there's going to be any spoken dialogue in a cartoon, the voice actor or actors record all the dialogue first and then the animators work around the spoken dialogue to make the animation fit it. Animators have to make sure the character's mouth movements (or head movements, in the case of characters like Marvin the Martian), fit the recorded dialogue. They have to make sure the lip sync and/or head movements fits and looks right. How is sound generally added? Do animators always animate actions first and add sound later? Or do they ever record sound and then create animation to match it? To me, it would make sense to look at storyboards and scripts and record sounds first like the dialogue, to get the sense of the timing of the final project and create animation around the sound. Please help- thank you.