Hello everyone, I would like to better understand when I should put the prep 'a' before a direct object. On word reference it's said that a 'introduce el objeto directo cuando se trata de personas o animales'. However I have seen mentioned in some formus these examples: 'Juan vio el perro' ('a' does not introduce the direct object even if the direct object is an animal) 'Llaman a America Nuevo Continente' ('a' introduces the direct object even if it is neither a person nor an animal) Are the two examples grammatically correct? Do you know how to understand when to put 'a' before the direct object? Thanks a lot for your time.