happy as a lark in Spanish — Translation

como un niño con zapatos nuevos

adj

(simile, colloquial) Very happy (sometimes with the extra connotations of being carefree or unaware of grimmer realities).

feliz como una perdiz

adj

(simile, colloquial) Very happy (sometimes with the extra connotations of being carefree or unaware of grimmer realities).

más contento que unas castañuelas

adj

(simile, colloquial) Very happy (sometimes with the extra connotations of being carefree or unaware of grimmer realities).