Swallowing is one of Yoshi's most common moves. After swallowing an enemy, Yoshi can turn it into a Yoshi Egg. He could also spit them back out. Swallow is also the name of Kirby's B-Button attack in Super Smash Bros. Melee. When Kirby swallowed an enemy, he would don their B-Button attack in the place of Swallow, as well as donning one of the twenty-five Kirby Hats corresponding with whichever opponent he swallowed. This did not work on the following only:

It is unknown whether this will return as one of Kirby's attacks in Super Smash Bros. Brawl, but it is very definite that it will.