Русский ⇄ Английский Итальянский +

доволен как слон ударения
общ.	happy as a pig in shit (Evgeny Shamlidi)
идиом.	happy as a clam (Yeldar Azanbayev)
разг.	tickled pink (ART Vancouver)
довольный как слон
общ.	thrilled to bits (Anglophile); as pleased as a dog with two tails (Anglophile); pleased as a dog with two tails (Anglophile)
сленг довольный, как слон
общ.	as happy as a lark