Learn Hardcore Spanish (Latin America): Mi perro se esconde cuando oye el trueno.

The se is a reflexive pronoun that shows the action is performed by the subject on itself. In this sentence, it indicates that the dog is hiding itself—this is why we say se esconde rather than just esconde.

How is the verb esconder conjugated here and why is it used reflexively?

It is conjugated as esconde, which is the third person singular present tense of esconder. By making it reflexive (se esconde), Spanish clarifies that the dog is performing the hiding action on itself, a nuance that in English we simply express with hides.

What does oye mean and from which verb is it derived?

Oye is the third person singular present tense of the verb oír, meaning to hear. In this sentence, it tells us that the dog hears the sound of the thunder.

Why is the definite article el used before trueno?

In Spanish, nouns typically require an article. Trueno is a masculine singular noun, which is why it takes the definite article el. This follows the standard noun–article agreement rules in Spanish.

How does the structure of "Mi perro se esconde cuando oye el trueno" compare to a similar sentence in English?

The sentence translates to "My dog hides when he hears the thunder." While the overall meaning is the same, Spanish uses a reflexive form (se esconde) to indicate that the subject performs the action on itself—a distinction that English doesn’t emphasize. Additionally, both languages use a clause starting with when or cuando to express the timing of the action.