Can anything other than druids transform?

have to be a bit more specific like what game. if you mean WoW. then no. no other cl can transform into something else like a bear, cat or moonkin, but priests get a shadow form. it makes shadow spells stronger but you cant cast holy/healing spells while in shadow form. and warlocks get demon form buff that makes them do more damage. but both priest and warlock keep there normal spells. with a druid when you shift you take on a new role. bear for tank cat for melee dps and moonkin for caster dps